CVE-2023-52679

of: Fix double free in of_parse_phandle_with_args_map

State: Published
Severity: 7.8 High
Published: May 17, 2024
Updated: Aug 5, 2026
Reserved: Mar 7, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

of: Fix double free in of_parse_phandle_with_args_map

In of_parse_phandle_with_args_map() the inner loop that iterates through the map entries calls of_node_put(new) to free the reference acquired by the previous iteration of the inner loop. This assumes that the value of "new" is NULL on the first iteration of the inner loop.

Make sure that this is true in all iterations of the outer loop by setting "new" to NULL after its value is assigned to "cur".

Extend the unittest to detect the double free and add an additional test case that actually triggers this path.

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before 26b4d702c44f9e5cf3c5c001ae619a4a001889dbAffected bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before a0a061151a6200c13149dbcdb6c065203c8425d2Affected bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before d5f490343c77e6708b6c4aa7dbbfbcbb9546adeaAffected bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before 4541004084527ce9e95a818ebbc4e6b293ffca21Affected bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before b9d760dae5b10e73369b769073525acd7b3be2bdAffected bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before b64d09a4e8596f76d27f4b4a90a1cf6baf6a82f8Affected bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before cafa992134124e785609a406da4ff2b54052aff7Affected bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before 4dde83569832f9377362e50f7748463340c5db6bAffected
LinuxLinux	4.17Affected before 4.17Not affected 4.19.306 through 4.19.Not affected 5.4.268 through 5.4.Not affected 5.10.209 through 5.10.Not affected 5.15.148 through 5.15.Not affected 6.1.75 through 6.1.Not affected 6.6.14 through 6.6.Not affected 6.7.2 through 6.7.*Not affected 6.8 and laterNot affected

Product

Versions

LinuxLinux

bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before 26b4d702c44f9e5cf3c5c001ae619a4a001889dbAffected
bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before a0a061151a6200c13149dbcdb6c065203c8425d2Affected
bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before d5f490343c77e6708b6c4aa7dbbfbcbb9546adeaAffected
bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before 4541004084527ce9e95a818ebbc4e6b293ffca21Affected
bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before b9d760dae5b10e73369b769073525acd7b3be2bdAffected
bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before b64d09a4e8596f76d27f4b4a90a1cf6baf6a82f8Affected
bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before cafa992134124e785609a406da4ff2b54052aff7Affected
bd6f2fd5a1d52198468c5cdc3c2472362dff5aaa to before 4dde83569832f9377362e50f7748463340c5db6bAffected

LinuxLinux

4.17Affected
before 4.17Not affected
4.19.306 through 4.19.*Not affected
5.4.268 through 5.4.*Not affected
5.10.209 through 5.10.*Not affected
5.15.148 through 5.15.*Not affected
6.1.75 through 6.1.*Not affected
6.6.14 through 6.6.*Not affected
6.7.2 through 6.7.*Not affected
6.8 and laterNot affected

References

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