CVE-2023-53781

mediumPriorität · verfolgen · 0EPSS 0.001 · 3. PerzentilDEEUNLRU
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
0.14% (3rd) EPSS
CVSS 5.5 · medium
Is it mine?
26 products
Prüfe deine Angriffsfläche
Who says so?
6 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · bewertet 2026-10-22

In the Linux kernel, the following vulnerability has been resolved: smc: Fix use-after-free in tcp_write_timer_handler(). With Eric's ref tracker, syzbot finally found a repro for use-after-free in tcp_write_timer_handler() by kernel TCP sockets. [0] If SMC creates a kernel socket in __smc_create(), the kernel socket is supposed to be freed in smc_clcsock_release() by calling sock_release() when we close() the parent SMC socket. However, at the end of smc_clcsock_release(), the kernel socket's sk_state might not be TCP_CLOSE. This means that we have not called inet_csk_destroy_sock() in __tcp_close() and have not stopped the TCP timers. The kernel socket's TCP timers can be fired later, so we need to hold a refcnt for net as we do for MPTCP subflows in mptcp_subflow_create_socket(). [0]: leaked reference. sk_alloc (./include/net/net_namespace.h:335 net/core/sock.c:2108) inet_create (net/ipv4/af_inet.c:319 net/ipv4/af_inet.c:244) __sock_create (net/socket.c:1546) smc_create (net/smc/af_smc.c:3269 net/smc/af_smc.c:3284) __sock_create (net/socket.c:1546) __sys_socket (net/socket.c:1634 net/socket.c:1618 net/socket.c:1661) __x64_sys_socket (net/socket.c:1672) do_syscall_64 (arch/x86/entry/common.c:50 arch/x86/entry/common.c:80) entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) ================================================================== BUG: KASAN: slab-use-after-free in tcp_write_timer_handler (net/ipv4/tcp_timer.c:378 net/ipv4/tcp_timer.c:624 net/ipv4/tcp_timer.c:594) Read of size 1 at addr ffff888052b65e0d by task syzrepro/18091 CPU: 0 PID: 18091 Comm: syzrepro Tainted: G W 6.3.0-rc4-01174-gb5d54eb5899a #7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-1.amzn2022.0.1 04/01/2014 Call Trace: <IRQ> dump_stack_lvl (lib/dump_stack.c:107) print_report (mm/kasan/report.c:320 mm/kasan/report.c:430) kasan_report (mm/kasan/report.c:538) tcp_write_timer_handler (net/ipv4/tcp_timer.c:378 net/ipv4/tcp_timer.c:624 net/ipv4/tcp_timer.c:594) tcp_write_timer (./include/linux/spinlock.h:390 net/ipv4/tcp_timer.c:643) call_timer_fn (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/timer.h:127 kernel/time/timer.c:1701) __run_timers.part.0 (kernel/time/timer.c:1752 kernel/time/timer.c:2022) run_timer_softirq (kernel/time/timer.c:2037) __do_softirq (./arch/x86/include/asm/jump_label.h:27 ./include/linux/jump_label.h:207 ./include/trace/events/irq.h:142 kernel/softirq.c:572) __irq_exit_rcu (kernel/softirq.c:445 kernel/softirq.c:650) irq_exit_rcu (kernel/softirq.c:664) sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1107 (discriminator 14)) </IRQ>

01

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Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

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    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_153-default-0:16-150400.2.2.s390x as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_153-default-0:16-150400.2.2.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_158-default-0:15-150400.2.2.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_158-default-0:15-150400.2.2.s390x as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_158-default-0:15-150400.2.2.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_176-default-0:9-150400.2.1.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_176-default-0:9-150400.2.1.s390x as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_176-default-0:9-150400.2.1.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_179-default-0:7-150400.2.1.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_179-default-0:7-150400.2.1.s390x as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_179-default-0:7-150400.2.1.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_97-default-0:16-150500.2.2.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_97-default-0:16-150500.2.2.s390x as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_97-default-0:16-150500.2.2.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_110-default-0:14-150500.2.1.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_110-default-0:14-150500.2.1.s390x as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_110-default-0:14-150500.2.1.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_116-default-0:11-150500.2.1.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_116-default-0:11-150500.2.1.s390x as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_116-default-0:11-150500.2.1.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkgraft-patch-4_12_14-122_266-default-0:11-2.1.ppc64le as component of SUSE Linux Enterprise Live Patching 12 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkgraft-patch-4_12_14-122_266-default-0:11-2.1.s390x as component of SUSE Linux Enterprise Live Patching 12 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkgraft-patch-4_12_14-122_266-default-0:11-2.1.x86_64 as component of SUSE Linux Enterprise Live Patching 12 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_150-default-0:16-150400.2.2.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_150-default-0:16-150400.2.2.s390x as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_150-default-0:16-150400.2.2.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_187-default-0:3-150400.2.1.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_187-default-0:3-150400.2.1.s390x as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150400_24_187-default-0:3-150400.2.1.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP4suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_124-default-0:6-150500.2.1.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_124-default-0:6-150500.2.1.s390x as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_124-default-0:6-150500.2.1.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_100-default-0:15-150500.2.2.ppc64le as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_100-default-0:15-150500.2.2.s390x as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkernel-livepatch-5_14_21-150500_55_100-default-0:15-150500.2.2.x86_64 as component of SUSE Linux Enterprise Live Patching 15 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkgraft-patch-4_12_14-122_255-default-0:14-2.1.ppc64le as component of SUSE Linux Enterprise Live Patching 12 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkgraft-patch-4_12_14-122_255-default-0:14-2.1.s390x as component of SUSE Linux Enterprise Live Patching 12 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

  • Behobenkgraft-patch-4_12_14-122_255-default-0:14-2.1.x86_64 as component of SUSE Linux Enterprise Live Patching 12 SP5suse_csaf

    To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

02

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.8
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5.5–7.8

v3.15.5mediumAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HsecondaryAusnutzbarkeit 1.8 · Auswirkung 5.9
v3.17.1highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.17highCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · SUSE Product Security
v3.17.8highCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · NCSC-NL NL
03

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS
04

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-119USCWE-416USCWE-825USCWE-825US
05

betroffene Produkte (26)

Betroffene Produkte und Versionsbereiche.

20 von 26 angezeigt
06

Advisories (25)

Hersteller- und Ökosystem-Meldungen dazu.

  • NCSC-2026-0431Kwetsbaarheden verholpen in IBM DataPower Gateway en onderliggende componentenNL2026-10-16csaf · ncsc_nlNL

    IBM heeft meerdere beveiligingsproblemen opgelost in DataPower Gateway versies 10.5 tot 11.0 en een veelvoud aan onderliggende subcomponenten.

  • SUSE-SU-2026:0263-1Security update for the Linux Kernel2026-01-22csaf · suse_csafDE

    Security update for the Linux Kernel

  • SUSE-SU-2026:0316-1Security update for the Linux Kernel2026-01-28csaf · suse_csafDE

    Security update for the Linux Kernel

  • SUSE-SU-2026:0350-1Security update for the Linux Kernel2026-01-30csaf · suse_csafDE

    Security update for the Linux Kernel

  • SUSE-SU-2026:0369-1Security update for the Linux Kernel2026-02-03csaf · suse_csafDE

    Security update for the Linux Kernel

  • SUSE-SU-2026:0411-1Security update for the Linux Kernel2026-02-09csaf · suse_csafDE

    Security update for the Linux Kernel

  • SUSE-SU-2026:0953-1Security update for the Linux Kernel (Live Patch 65 for SUSE Linux Enterprise 12 SP5)2026-03-22csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 65 for SUSE Linux Enterprise 12 SP5)

  • SUSE-SU-2026:0954-1Security update for the Linux Kernel (Live Patch 68 for SUSE Linux Enterprise 12 SP5)2026-03-22csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 68 for SUSE Linux Enterprise 12 SP5)

  • SUSE-SU-2026:0958-1Security update for the Linux Kernel (Live Patch 72 for SUSE Linux Enterprise 12 SP5)2026-03-23csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 72 for SUSE Linux Enterprise 12 SP5)

  • SUSE-SU-2026:0964-1Security update for the Linux Kernel (Live Patch 75 for SUSE Linux Enterprise 12 SP5)2026-03-23csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 75 for SUSE Linux Enterprise 12 SP5)

  • SUSE-SU-2026:0970-1Security update for the Linux Kernel (Live Patch 73 for SUSE Linux Enterprise 12 SP5)2026-03-23csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 73 for SUSE Linux Enterprise 12 SP5)

  • SUSE-SU-2026:0983-1Security update for the Linux Kernel (Live Patch 37 for SUSE Linux Enterprise 15 SP4)2026-03-23csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 37 for SUSE Linux Enterprise 15 SP4)

  • SUSE-SU-2026:0985-1Security update for the Linux Kernel (Live Patch 38 for SUSE Linux Enterprise 15 SP4)2026-03-23csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 38 for SUSE Linux Enterprise 15 SP4)

  • SUSE-SU-2026:0992-1Security update for the Linux Kernel (Live Patch 44 for SUSE Linux Enterprise 15 SP4)2026-03-24csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 44 for SUSE Linux Enterprise 15 SP4)

  • SUSE-SU-2026:0997-1Security update for the Linux Kernel (Live Patch 45 for SUSE Linux Enterprise 15 SP4)2026-03-24csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 45 for SUSE Linux Enterprise 15 SP4)

  • SUSE-SU-2026:1000-1Security update for the Linux Kernel (Live Patch 24 for SUSE Linux Enterprise 15 SP5)2026-03-25csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 24 for SUSE Linux Enterprise 15 SP5)

  • SUSE-SU-2026:1002-1Security update for the Linux Kernel (Live Patch 27 for SUSE Linux Enterprise 15 SP5)2026-03-25csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 27 for SUSE Linux Enterprise 15 SP5)

  • SUSE-SU-2026:1039-1Security update for the Linux Kernel (Live Patch 29 for SUSE Linux Enterprise 15 SP5)2026-03-25csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 29 for SUSE Linux Enterprise 15 SP5)

  • SUSE-SU-2026:1044-1Security update for the Linux Kernel (Live Patch 70 for SUSE Linux Enterprise 12 SP5)2026-03-25csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 70 for SUSE Linux Enterprise 12 SP5)

  • SUSE-SU-2026:1046-1Security update for the Linux Kernel (Live Patch 36 for SUSE Linux Enterprise 15 SP4)2026-03-25csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 36 for SUSE Linux Enterprise 15 SP4)

  • SUSE-SU-2026:1048-1Security update for the Linux Kernel (Live Patch 31 for SUSE Linux Enterprise 15 SP5)2026-03-26csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 31 for SUSE Linux Enterprise 15 SP5)

  • SUSE-SU-2026:1049-1Security update for the Linux Kernel (Live Patch 25 for SUSE Linux Enterprise 15 SP5)2026-03-26csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 25 for SUSE Linux Enterprise 15 SP5)

  • SUSE-SU-2026:1088-1Security update for the Linux Kernel (Live Patch 67 for SUSE Linux Enterprise 12 SP5)2026-03-26csaf · suse_csafDE

    Security update for the Linux Kernel (Live Patch 67 for SUSE Linux Enterprise 12 SP5)

  • WID-SEC-W-2025-2765Linux Kernel: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2025-12-08csaf · cert_bundDE

    Ein lokaler Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen.

  • WID-SEC-W-2026-3623IBM DataPower Gateway: Mehrere SchwachstellenDeutsch2026-09-28csaf · cert_bundDE

    Ein Angreifer kann mehrere Schwachstellen in IBM DataPower Gateway ausnutzen, um beliebigen Programmcode auszuführen, erweiterte Berechtigungen zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen, einen Denial-of-Service-Zustand auszulösen oder Cross-Site-Scripting-Angriffe durchzuführen.

07

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

08

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdfstec_bducert_bundncsc_nlsuse_csafNVDCVE.orgMITRE
veröffentlicht 2025-12-09geändert 2026-10-15
09

Referenzen (8)

Externe Belege — Patches, Meldungen, Analysen.

scry

Angreifer nutzen Schwachstellen wie diese gegen im Internet exponierte Dienste aus. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.

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