CVE-2021-47295 | THREATINT

Description

In the Linux kernel, the following vulnerability has been resolved: net: sched: fix memory leak in tcindex_partial_destroy_work Syzbot reported memory leak in tcindex_set_parms(). The problem was in non-freed perfect hash in tcindex_partial_destroy_work(). In tcindex_set_parms() new tcindex_data is allocated and some fields from old one are copied to new one, but not the perfect hash. Since tcindex_partial_destroy_work() is the destroy function for old tcindex_data, we need to free perfect hash to avoid memory leak.

PUBLISHED Reserved 2024-05-21 | Published 2024-05-21 | Updated 2025-12-06 | Assigner Linux

Product status

Default status

unaffected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before 53af9c793f644d5841d84d8e0ad83bd7ab47f3e0

affected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before 01d0d2b8b4e3cf2110baba9371c0c3d04ad5c77b

affected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before 8d7924ce85bae64e7a67c366c7c50840f49f3a62

affected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before 7a6fb69bbcb21e9ce13bdf18c008c268874f0480

affected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before 8e9662fde6d63c78eb1350f6167f64c9d71a865b

affected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before 18c3fa7a7fdbb4d21dafc8a7710ae2c1680930f6

affected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before cac71d27745f92ee13f0ecc668ffe151a4a9c9b1

affected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before f5051bcece50140abd1a11a2d36dc3ec5484fc32

affected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before 7c183dc0af472dec33d2c0786a5e356baa8cad19

affected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before 3abebc503a5148072052c229c6b04b329a420ecd

affected

331b72922c5f58d48fd5500acadc91777cc31970 (git) before 372ae77cf11d11fb118cbe2d37def9dd5f826abd

affected

Default status

affected

3.18

affected

Any version before 3.18

unaffected

4.14.308 (semver)

unaffected

4.19.276 (semver)

unaffected

5.4.136 (semver)

unaffected

5.4.235 (semver)

unaffected

5.10.54 (semver)

unaffected

5.10.173 (semver)

unaffected

5.13.6 (semver)

unaffected

5.15.100 (semver)

unaffected

6.1.18 (semver)

unaffected

6.2.5 (semver)

unaffected

5.14 (original_commit_for_fix)

unaffected

References

git.kernel.org/...c/8d7924ce85bae64e7a67c366c7c50840f49f3a62

git.kernel.org/...c/8e9662fde6d63c78eb1350f6167f64c9d71a865b

git.kernel.org/...c/cac71d27745f92ee13f0ecc668ffe151a4a9c9b1

git.kernel.org/...c/f5051bcece50140abd1a11a2d36dc3ec5484fc32

git.kernel.org/...c/53af9c793f644d5841d84d8e0ad83bd7ab47f3e0

git.kernel.org/...c/01d0d2b8b4e3cf2110baba9371c0c3d04ad5c77b

git.kernel.org/...c/8d7924ce85bae64e7a67c366c7c50840f49f3a62

git.kernel.org/...c/7a6fb69bbcb21e9ce13bdf18c008c268874f0480

git.kernel.org/...c/8e9662fde6d63c78eb1350f6167f64c9d71a865b

git.kernel.org/...c/18c3fa7a7fdbb4d21dafc8a7710ae2c1680930f6

git.kernel.org/...c/cac71d27745f92ee13f0ecc668ffe151a4a9c9b1

git.kernel.org/...c/f5051bcece50140abd1a11a2d36dc3ec5484fc32

git.kernel.org/...c/7c183dc0af472dec33d2c0786a5e356baa8cad19

git.kernel.org/...c/3abebc503a5148072052c229c6b04b329a420ecd

git.kernel.org/...c/372ae77cf11d11fb118cbe2d37def9dd5f826abd

cve.org (CVE-2021-47295)

nvd.nist.gov (CVE-2021-47295)

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