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CVE-2022-50724

Vulnérabilité non évaluée dans Linux (Linux)

CVSS 0.0 · Non évaluée
EPSS 0.3%
Linux•Linux•Versions : <=6.1.*, <35593d60b1622834984c43add7646d4069671aa9, aea6cb99703e17019e025aa71643b4d3e0a24413, 167c3b1f9793a1fb23e75e693f078420850306d4, <f86b2f216636790d5922458578825e4628fb570f, 0120ec32a7774b5061ced1a9a7ff833edd8b4cb6, <ba62319a42c50e6254e98b3f316464fac8e77968, 0, 1d58235c062309d51660fd04182d7a8ab6a48ad6, 4.19.153, 96c6b5d5775637b3095ef934f871044811fd4db7, <4.10, 5.9.2, <90b713aadc1240bf2dd03d610d6c1d016a9123a2, <4.20, <c4c64d8abd656b9807b63178750fa91454602b86, 4.9.241, <=5.10.*, <=6.0.*, 5.4.229, 6.0.16, <=5.4.*, <5.10, f58ce31b05b4ca0c200a5cbe4724efe279405095, <5.9, 5.4.73, <6a03c31d08f95dca9633a552de167b9e625833a8, 5.10.163, 5.15.86, 4.14.203, <=*, <=5.15.*, <5.4.229, 6.1.2, 5.8.17, <4.15, 5.10, 6.2, 3fc99e38fdbf6b693693f861aa55a50a74c2d202

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.

Gravité et risque d'exploitation

CVE-2022-50724 obtient un score CVSS de 0.0/10, soit une gravité non évaluée. Selon le modèle EPSS, la probabilité qu'elle soit exploitée dans les 30 prochains jours est de 0.26 %, ce qui la place devant 17.0 % des CVE référencées.

Que faire ?

  • Vérifiez si Linux (versions <=6.1.*, <35593d60b1622834984c43add7646d4069671aa9, aea6cb99703e17019e025aa71643b4d3e0a24413, 167c3b1f9793a1fb23e75e693f078420850306d4, <f86b2f216636790d5922458578825e4628fb570f, 0120ec32a7774b5061ced1a9a7ff833edd8b4cb6, <ba62319a42c50e6254e98b3f316464fac8e77968, 0, 1d58235c062309d51660fd04182d7a8ab6a48ad6, 4.19.153, 96c6b5d5775637b3095ef934f871044811fd4db7, <4.10, 5.9.2, <90b713aadc1240bf2dd03d610d6c1d016a9123a2, <4.20, <c4c64d8abd656b9807b63178750fa91454602b86, 4.9.241, <=5.10.*, <=6.0.*, 5.4.229, 6.0.16, <=5.4.*, <5.10, f58ce31b05b4ca0c200a5cbe4724efe279405095, <5.9, 5.4.73, <6a03c31d08f95dca9633a552de167b9e625833a8, 5.10.163, 5.15.86, 4.14.203, <=*, <=5.15.*, <5.4.229, 6.1.2, 5.8.17, <4.15, 5.10, 6.2, 3fc99e38fdbf6b693693f861aa55a50a74c2d202) est présent sur votre parc.
  • Appliquez le correctif ou la version corrigée indiqués dans les références de l'éditeur.
  • À défaut de correctif, limitez l'exposition (filtrage réseau, désactivation du composant).
  • Automatisez la détection : les agents CVE Heimdall (gratuits, open source) corrèlent l'inventaire de vos serveurs avec la base CVE.

Références

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