CVE-2026-32849
mediumpriority · track · 0EPSS 0.001 · 1 %ileDEEUEPSS · scored 2026-10-28
NetBSD prior to commit ec8451e contains a signed integer overflow vulnerability in the cryptodev_op() function in sys/opencrypto/cryptodev.c where the local variable iov_len is declared as a signed int but assigned from an unsigned cop->dst_len value, causing undefined behavior when cop->dst_len exceeds INT_MAX. A local attacker with access to /dev/crypto and a compression session type can exploit this vulnerability by providing a dst_len value exceeding INT_MAX to trigger a kernel panic through NULL pointer dereference when CONFIG_SVS is disabled and corrupted UIO pointer arithmetic.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.9–5.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1575NetBSD Foundation NetBSD OS: Mehrere Schwachstellen ermöglichen Denial of ServiceDeutsch2026-05-18csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in NetBSD Foundation NetBSD OS ausnutzen, um einen Denial of Service Angriff durchzuführen.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2026-32849cnnvd
- https://www.netbsd.org/Patchcnnvd
- https://github.com/NetBSD/src/commit/ec8451efc1565516aba9e7047e1a1a1ce7953a2fenisa_euvd
- https://nasm.re/posts/uaf_netbsd_crypto/enisa_euvd
- https://www.vulncheck.com/advisories/netbsd-signed-integer-overflow-in-cryptodev-op-via-cryptodev-cenisa_euvd
- https://github.com/NetBSD/src/commit/ec8451efc1565516aba9e7047e1a1a1ce7953a2fnvd
- https://nasm.re/posts/uaf_netbsd_crypto/nvd
- https://www.vulncheck.com/advisories/netbsd-signed-integer-overflow-in-cryptodev-op-via-cryptodev-cnvd
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