CVE-2023-53373

crypto: seqiv - Handle EBUSY correctly

HIGH
7.8
CVSS Score
Published: September 18, 2025 at 01:33 PM UTC
Updated: August 5, 2026 at 10:24 AM UTC
1 product affected across 1 vendorLinux Kernel

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

In the Linux kernel, the following vulnerability has been resolved: crypto: seqiv - Handle EBUSY correctly As it is seqiv only handles the special return value of EINPROGERSS, which means that in all other cases it will free data related to the request. However, as the caller of seqiv may specify MAY_BACKLOG, we also need to expect EBUSY and treat it in the same way. Otherwise backlogged requests will trigger a use-after-free.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

2.6.25 ≤ v < 4.14.3082.6.25 ≤ v < 4.19.2762.6.25 ≤ v < 5.10.1732.6.25 ≤ v < 5.15.992.6.25 ≤ v < 5.4.2352.6.25 ≤ v < 6.1.162.6.25 ≤ v < 6.2.32.6.25 ≤ v < 6.34.15 ≤ v < 4.19.2764.20 ≤ v < 5.4.2355.11 ≤ v < 5.15.995.16 ≤ v < 6.1.165.5 ≤ v < 5.10.1736.2 ≤ v < 6.2.30a270321dbf948963aeb0e8382fe17d2c2eb37712.6.25
Vendor states this is fixed in 1effbddaff60eeef8017c6dea1ee0ed970164d14 (fixed)
Vendor states this is fixed in 32e62025e5e52fbe4812ef044759de7010b15dbc (fixed)
Vendor states this is fixed in 36ec108b7bd7e280edb22de028467bd09d644620 (fixed)
Vendor states this is fixed in 4d497e8b200a175094e0ac252ed878add39b8771 (fixed)
Vendor states this is fixed in 63551e4b7cbcd9914258827699eb2cb6ed6e4a16 (fixed)
Vendor states this is fixed in 9477db935eb690f697d9bcc4f608927841bc8b36 (fixed)
Vendor states this is fixed in ae849d2f48019ff9c104e32bf588ccbfb200e971 (fixed)
Vendor states this is fixed in cc4d0d4251748a8a68026938f4055d2ac47c5719 (fixed)
Vendor states this is fixed in 2.6.25 (unaffected)
Vendor states this is fixed in 4.14.308 (unaffected)
Vendor states this is fixed in 4.19.276 (unaffected)
Vendor states this is fixed in 5.10.173 (unaffected)
Vendor states this is fixed in 5.15.99 (unaffected)
Vendor states this is fixed in 5.4.235 (unaffected)
Vendor states this is fixed in 6.1.16 (unaffected)
Vendor states this is fixed in 6.2.3 (unaffected)
Vendor states this is fixed in 6.3 (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.8HIGHLinux
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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