CVE-2026-63805

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Source
https://cve.org/CVERecord?id=CVE-2026-63805
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63805.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-63805
Downstream
Published
2026-07-19T12:02:09.669Z
Modified
2026-07-22T05:30:07.563717985Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
crypto: nx - fix nx_crypto_ctx_exit argument
Details

In the Linux kernel, the following vulnerability has been resolved:

crypto: nx - fix nxcryptoctx_exit argument

nxcryptoctxshashexit calls nxcryptoctxexit with cryptoshashctx(...) but cryptoshashctx gives a nxcryptoctx *, not a cryptotfm *.

Fix the type in nxcryptoctxexit and drop the bogus cryptotfm_ctx call.

This fixes the following oops:

BUG: Unable to handle kernel data access at 0xc0403effffffffc8 Faulting instruction address: 0xc000000000396cb4 Oops: Kernel access of bad area, sig: 11 [#15] Call Trace: nxcryptoctxshashexit+0x24/0x60 cryptoshashexittfm+0x28/0x40 cryptodestroytfm+0x98/0x140 cryptoexitahashusingshash+0x20/0x40 cryptodestroytfm+0x98/0x140 hashrelease+0x1c/0x30 algsockdestruct+0x38/0x60 __skdestruct+0x48/0x2b0 afalg_release+0x58/0xb0 __sockrelease+0x68/0x150 sockclose+0x20/0x40 _fput+0x110/0x3a0 sysclose+0x48/0xa0 systemcallexception+0x140/0x2d0 systemcallcommon+0xf4/0x258

.. which came from hardlink(1) opportunistically using AF_ALG.

The same problem exists with nxcryptoctxskcipherexit getting a context it wasn't expecting, but apparently nobody hit that for years.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/63xxx/CVE-2026-63805.json",
    "cna_assigner": "Linux"
}
References

Affected packages

Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git

Affected ranges

Type
GIT
Repo
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Events
Introduced
bfd9efddf990d152dc9912fdca520c5e1e19e1e2
Fixed
8d8507a457667f23477a15496b91908a5b5b7cf3
Fixed
833033e6e55acf11304ff7bbbdf18351d139c281
Fixed
4e67f504ee9ded15e256b64f4fde150e917381d7

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63805.json"

Linux / Kernel

Package

Name
Kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.5.0
Fixed
6.18.38
Type
ECOSYSTEM
Events
Introduced
6.19.0
Fixed
7.1.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-63805.json"