CVE-2022-49914

published 2025-05-01

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…

Priority P4 18 medium 5.5 CVSS 3.1

AV L AC L PR L UI N S U C N I N A H

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

20 ranges

Vendor	Product	Version range	Fixed in
debian	linux	< linux 6.0.8-1 (bookworm)	linux 6.0.8-1 (bookworm)
linux	linux	—	—
linux	linux	>= 3301958b7c1dae8f0f5ded63aa881e0b71e78464 < b1dc9019bb5f89abae85645de1a2dd4830c1f8e9	b1dc9019bb5f89abae85645de1a2dd4830c1f8e9
linux	linux	>= 3301958b7c1dae8f0f5ded63aa881e0b71e78464 < cded2c89774b99b67c98147ae103ea878c92a206	cded2c89774b99b67c98147ae103ea878c92a206
linux	linux	>= 3301958b7c1dae8f0f5ded63aa881e0b71e78464 < 2c0329406bb28109c07c6e23e5e3e0fa618a95d7	2c0329406bb28109c07c6e23e5e3e0fa618a95d7
linux	linux	>= 3301958b7c1dae8f0f5ded63aa881e0b71e78464 < a52e24c7fcc3c5ce3588a14e3663c00868d36623	a52e24c7fcc3c5ce3588a14e3663c00868d36623
linux	linux	>= 3301958b7c1dae8f0f5ded63aa881e0b71e78464 < 6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f	6ba3479f9e96b9ad460c7e77abc26dd16e5dec4f
linux	linux	>= 3301958b7c1dae8f0f5ded63aa881e0b71e78464 < 396515db923ad5cbeb179d6b88927870b4cbebb7	396515db923ad5cbeb179d6b88927870b4cbebb7
linux	linux	>= 3301958b7c1dae8f0f5ded63aa881e0b71e78464 < 5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1	5614dc3a47e3310fbc77ea3b67eaadd1c6417bf1
linux	linux_kernel	—	—
linux	linux_kernel	>= 0 < 5.10.158-1	5.10.158-1
linux	linux_kernel	>= 0 < 6.0.8-1	6.0.8-1
linux	linux_kernel	>= 0 < 6.0.8-1	6.0.8-1
linux	linux_kernel	>= 0 < 6.0.8-1	6.0.8-1
linux	linux_kernel	>= 3.5 < 4.14.299	4.14.299
linux	linux_kernel	>= 4.15 < 4.19.265	4.19.265
linux	linux_kernel	>= 4.20 < 5.4.224	5.4.224
linux	linux_kernel	>= 5.11 < 5.15.78	5.15.78
linux	linux_kernel	>= 5.16 < 6.0.8	6.0.8
linux	linux_kernel	>= 5.5 < 5.10.154	5.10.154

CVSS provenance

nvd v3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

osv 5.5 MEDIUM

vendor_debian 5.5 MEDIUM

vendor_redhat 5.5 MEDIUM

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