CVE-2023-53373

crypto: seqiv - Handle EBUSY correctly

State: Published
Severity: 7.8 High
Published: Sep 18, 2025
Updated: Aug 5, 2026
Reserved: Sep 17, 2025

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.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	CISA-ADP

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
LinuxLinux	0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before cc4d0d4251748a8a68026938f4055d2ac47c5719Affected 0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 1effbddaff60eeef8017c6dea1ee0ed970164d14Affected 0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 63551e4b7cbcd9914258827699eb2cb6ed6e4a16Affected 0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before ae849d2f48019ff9c104e32bf588ccbfb200e971Affected 0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 36ec108b7bd7e280edb22de028467bd09d644620Affected 0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 4d497e8b200a175094e0ac252ed878add39b8771Affected 0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 9477db935eb690f697d9bcc4f608927841bc8b36Affected 0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 32e62025e5e52fbe4812ef044759de7010b15dbcAffected
LinuxLinux	2.6.25Affected before 2.6.25Not affected 4.14.308 through 4.14.Not affected 4.19.276 through 4.19.Not affected 5.4.235 through 5.4.Not affected 5.10.173 through 5.10.Not affected 5.15.99 through 5.15.Not affected 6.1.16 through 6.1.Not affected 6.2.3 through 6.2.*Not affected 6.3 and laterNot affected

Product

Versions

LinuxLinux

0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before cc4d0d4251748a8a68026938f4055d2ac47c5719Affected
0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 1effbddaff60eeef8017c6dea1ee0ed970164d14Affected
0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 63551e4b7cbcd9914258827699eb2cb6ed6e4a16Affected
0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before ae849d2f48019ff9c104e32bf588ccbfb200e971Affected
0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 36ec108b7bd7e280edb22de028467bd09d644620Affected
0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 4d497e8b200a175094e0ac252ed878add39b8771Affected
0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 9477db935eb690f697d9bcc4f608927841bc8b36Affected
0a270321dbf948963aeb0e8382fe17d2c2eb3771 to before 32e62025e5e52fbe4812ef044759de7010b15dbcAffected

LinuxLinux

2.6.25Affected
before 2.6.25Not affected
4.14.308 through 4.14.*Not affected
4.19.276 through 4.19.*Not affected
5.4.235 through 5.4.*Not affected
5.10.173 through 5.10.*Not affected
5.15.99 through 5.15.*Not affected
6.1.16 through 6.1.*Not affected
6.2.3 through 6.2.*Not affected
6.3 and laterNot affected

References

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