Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 3301958b7c1dae8f0f5ded63aa881e0b71e78464 before b1dc9019bb5f89abae85645de1a2dd4830c1f8e9; affected 3301958b7c1dae8f0f5ded63aa881e0b71e78464 before cded2c89774b99b67c98147ae103ea878c92a206; affected 3301958b7c1dae8f0f5ded63aa881e0b71e78464 before 2c0329406bb28109c07c6e23e5e3e0fa618a95d7; affected 3301958b7c1dae8f0f5ded63aa881e0b71e78464 before a52e24c7fcc3c5ce3588a14e3663c00868d36623; affected 3301958b7c1dae8f0f5ded63aa881e0b71e78464 before 6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f; affected 3301958b7c1dae8f0f5ded63aa881e0b71e78464 before 396515db923ad5cbeb179d6b88927870b4cbebb7; affected 3301958b7c1dae8f0f5ded63aa881e0b71e78464 before 5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1 |
| Linux / Linux | affected 3.5; unaffected 0 before 3.5; unaffected 4.14.299 through 4.14.*; unaffected 4.19.265 through 4.19.*; unaffected 5.4.224 through 5.4.*; unaffected 5.10.154 through 5.10.*; unaffected 5.15.78 through 5.15.*; unaffected 6.0.8 through 6.0.*; unaffected 6.1 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/b1dc9019bb5f89abae85645de1a2dd4830c1f8e9
- https://git.kernel.org/stable/c/cded2c89774b99b67c98147ae103ea878c92a206
- https://git.kernel.org/stable/c/2c0329406bb28109c07c6e23e5e3e0fa618a95d7
- https://git.kernel.org/stable/c/a52e24c7fcc3c5ce3588a14e3663c00868d36623
- https://git.kernel.org/stable/c/6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f
- https://git.kernel.org/stable/c/396515db923ad5cbeb179d6b88927870b4cbebb7
- https://git.kernel.org/stable/c/5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1