CVE-2022-49914
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix inode list leak during backref walking at resolve_indirect_refs() During backref walking, at resolve_indirect_refs(), if we get an error we jump to the 'out' label and call…
Does this matter?
Lower severity and a low EPSS score (0.20%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix inode list leak during backref walking at resolve_indirect_refs() During backref walking, at resolve_indirect_refs(), if we get an error we jump to the 'out' label and call ulist_free() on the 'parents' ulist, which frees all the elements in the ulist - however that does not free any inode lists that may be attached to elements, through the 'aux' field of a ulist node, so we end up leaking lists if we have any attached to the unodes. Fix this by calling free_leaf_list() instead of ulist_free() when we exit from resolve_indirect_refs(). The static function free_leaf_list() is moved up for this to be possible and it's slightly simplified by removing unnecessary code.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.20% probability · 10th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-401
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2c0329406bb28109c07c6e23e5e3e0fa618a95d7Patch
- https://git.kernel.org/stable/c/396515db923ad5cbeb179d6b88927870b4cbebb7Patch
- https://git.kernel.org/stable/c/5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1Patch
- https://git.kernel.org/stable/c/6ba3479f9e96b9ad460c7e77abc26dd16e5dec4fPatch
- https://git.kernel.org/stable/c/a52e24c7fcc3c5ce3588a14e3663c00868d36623Patch
- https://git.kernel.org/stable/c/b1dc9019bb5f89abae85645de1a2dd4830c1f8e9Patch
- https://git.kernel.org/stable/c/cded2c89774b99b67c98147ae103ea878c92a206Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.