CVE-2022-50724 | THREATINT

Description

In the Linux kernel, the following vulnerability has been resolved: regulator: core: fix resource leak in regulator_register() I got some resource leak reports while doing fault injection test: OF: ERROR: memory leak, expected refcount 1 instead of 100, of_node_get()/of_node_put() unbalanced - destroy cset entry: attach overlay node /i2c/pmic@64/regulators/buck1 unreferenced object 0xffff88810deea000 (size 512): comm "490-i2c-rt5190a", pid 253, jiffies 4294859840 (age 5061.046s) hex dump (first 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff a0 1e 00 a1 ff ff ff ff ................ backtrace: [<00000000d78541e2>] kmalloc_trace+0x21/0x110 [<00000000b343d153>] device_private_init+0x32/0xd0 [<00000000be1f0c70>] device_add+0xb2d/0x1030 [<00000000e3e6344d>] regulator_register+0xaf2/0x12a0 [<00000000e2f5e754>] devm_regulator_register+0x57/0xb0 [<000000008b898197>] rt5190a_probe+0x52a/0x861 [rt5190a_regulator] unreferenced object 0xffff88810b617b80 (size 32): comm "490-i2c-rt5190a", pid 253, jiffies 4294859904 (age 5060.983s) hex dump (first 32 bytes): 72 65 67 75 6c 61 74 6f 72 2e 32 38 36 38 2d 53 regulator.2868-S 55 50 50 4c 59 00 ff ff 29 00 00 00 2b 00 00 00 UPPLY...)...+... backtrace: [<000000009da9280d>] __kmalloc_node_track_caller+0x44/0x1b0 [<0000000025c6a4e5>] kstrdup+0x3a/0x70 [<00000000790efb69>] create_regulator+0xc0/0x4e0 [<0000000005ed203a>] regulator_resolve_supply+0x2d4/0x440 [<0000000045796214>] regulator_register+0x10b3/0x12a0 [<00000000e2f5e754>] devm_regulator_register+0x57/0xb0 [<000000008b898197>] rt5190a_probe+0x52a/0x861 [rt5190a_regulator] After calling regulator_resolve_supply(), the 'rdev->supply' is set by set_supply(), after this set, in the error path, the resources need be released, so call regulator_put() to avoid the leaks.

PUBLISHED Reserved 2025-12-24 | Published 2025-12-24 | Updated 2025-12-24 | Assigner Linux

Product status

Default status

unaffected

0120ec32a7774b5061ced1a9a7ff833edd8b4cb6 (git) before 35593d60b1622834984c43add7646d4069671aa9

affected

aea6cb99703e17019e025aa71643b4d3e0a24413 (git) before 6a03c31d08f95dca9633a552de167b9e625833a8

affected

aea6cb99703e17019e025aa71643b4d3e0a24413 (git) before c4c64d8abd656b9807b63178750fa91454602b86

affected

aea6cb99703e17019e025aa71643b4d3e0a24413 (git) before 90b713aadc1240bf2dd03d610d6c1d016a9123a2

affected

aea6cb99703e17019e025aa71643b4d3e0a24413 (git) before f86b2f216636790d5922458578825e4628fb570f

affected

aea6cb99703e17019e025aa71643b4d3e0a24413 (git) before ba62319a42c50e6254e98b3f316464fac8e77968

affected

1d58235c062309d51660fd04182d7a8ab6a48ad6 (git)

affected

167c3b1f9793a1fb23e75e693f078420850306d4 (git)

affected

3fc99e38fdbf6b693693f861aa55a50a74c2d202 (git)

affected

96c6b5d5775637b3095ef934f871044811fd4db7 (git)

affected

f58ce31b05b4ca0c200a5cbe4724efe279405095 (git)

affected

Default status

affected

5.10

affected

Any version before 5.10

unaffected

5.4.229 (semver)

unaffected

5.10.163 (semver)

unaffected

5.15.86 (semver)

unaffected

6.0.16 (semver)

unaffected

6.1.2 (semver)

unaffected

6.2 (original_commit_for_fix)

unaffected

References

git.kernel.org/...c/35593d60b1622834984c43add7646d4069671aa9

git.kernel.org/...c/6a03c31d08f95dca9633a552de167b9e625833a8

git.kernel.org/...c/c4c64d8abd656b9807b63178750fa91454602b86

git.kernel.org/...c/90b713aadc1240bf2dd03d610d6c1d016a9123a2

git.kernel.org/...c/f86b2f216636790d5922458578825e4628fb570f

git.kernel.org/...c/ba62319a42c50e6254e98b3f316464fac8e77968

cve.org (CVE-2022-50724)

nvd.nist.gov (CVE-2022-50724)

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