CVE-2022-50007

xfrm: fix refcount leak in __xfrm_policy_check()

State: Published
Severity: Not scored
Published: Jun 18, 2025
Updated: May 11, 2026
Reserved: Jun 18, 2025

Description

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

xfrm: fix refcount leak in __xfrm_policy_check()

The issue happens on an error path in __xfrm_policy_check(). When the fetching process of the object `pols[1]` fails, the function simply returns 0, forgetting to decrement the reference count of `pols[0]`, which is incremented earlier by either xfrm_sk_policy_lookup() or xfrm_policy_lookup(). This may result in memory leaks.

Fix it by decreasing the reference count of `pols[0]` in that path.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	134b0fc544ba062498451611cb6f3e4454221b3d to before 18e6b6e2555c93f5ca09f2b85ef1fa025c8acceaAffected 134b0fc544ba062498451611cb6f3e4454221b3d to before 8f94b933103ee1bda119543369cc18a1be5536dbAffected 134b0fc544ba062498451611cb6f3e4454221b3d to before 0769491a8acd3e85ca4c3f65080eac2c824262dfAffected 134b0fc544ba062498451611cb6f3e4454221b3d to before 63da7a2bbf3f28094920e0b8a17d2571a9bd842dAffected 134b0fc544ba062498451611cb6f3e4454221b3d to before 1305d7d4f35ca6f214a2d23b075aa6a924cff3beAffected 134b0fc544ba062498451611cb6f3e4454221b3d to before 26ad2398fe4984f4f6f930bcb3bc9047fa77265bAffected 134b0fc544ba062498451611cb6f3e4454221b3d to before d66c052879791313f90c0584420f196a038fb8b8Affected 134b0fc544ba062498451611cb6f3e4454221b3d to before 9c9cb23e00ddf45679b21b4dacc11d1ae7961ebeAffected
LinuxLinux	2.6.19Affected before 2.6.19Not affected 4.9.327 through 4.9.Not affected 4.14.292 through 4.14.Not affected 4.19.257 through 4.19.Not affected 5.4.212 through 5.4.Not affected 5.10.140 through 5.10.Not affected 5.15.64 through 5.15.Not affected 5.19.6 through 5.19.*Not affected 6.0 and laterNot affected

Product

Versions

LinuxLinux

134b0fc544ba062498451611cb6f3e4454221b3d to before 18e6b6e2555c93f5ca09f2b85ef1fa025c8acceaAffected
134b0fc544ba062498451611cb6f3e4454221b3d to before 8f94b933103ee1bda119543369cc18a1be5536dbAffected
134b0fc544ba062498451611cb6f3e4454221b3d to before 0769491a8acd3e85ca4c3f65080eac2c824262dfAffected
134b0fc544ba062498451611cb6f3e4454221b3d to before 63da7a2bbf3f28094920e0b8a17d2571a9bd842dAffected
134b0fc544ba062498451611cb6f3e4454221b3d to before 1305d7d4f35ca6f214a2d23b075aa6a924cff3beAffected
134b0fc544ba062498451611cb6f3e4454221b3d to before 26ad2398fe4984f4f6f930bcb3bc9047fa77265bAffected
134b0fc544ba062498451611cb6f3e4454221b3d to before d66c052879791313f90c0584420f196a038fb8b8Affected
134b0fc544ba062498451611cb6f3e4454221b3d to before 9c9cb23e00ddf45679b21b4dacc11d1ae7961ebeAffected

LinuxLinux

2.6.19Affected
before 2.6.19Not affected
4.9.327 through 4.9.*Not affected
4.14.292 through 4.14.*Not affected
4.19.257 through 4.19.*Not affected
5.4.212 through 5.4.*Not affected
5.10.140 through 5.10.*Not affected
5.15.64 through 5.15.*Not affected
5.19.6 through 5.19.*Not affected
6.0 and laterNot affected

References

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