Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: mm: prevent derefencing NULL ptr in pfn_section_valid() Commit 5ec8e8ea8b77 ("mm/sparsemem: fix race in accessing memory_section->usage") changed pfn_section_valid() to add a READ_ONCE() call around "ms->usage" to fix a race with section_deactivate() where ms->usage can be cleared. The READ_ONCE() call, by itself, is not enough to prevent NULL pointer dereference. We need to check its value before dereferencing it.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 90ad17575d26874287271127d43ef3c2af876cea before 0100aeb8a12d51950418e685f879cc80cb8e5982; affected b448de2459b6d62a53892487ab18b7d823ff0529 before bc17f2377818dca643a74499c3f5333500c90503; affected 68ed9e33324021e9d6b798e9db00ca3093d2012a before 941e816185661bf2b44b488565d09444ae316509; affected 70064241f2229f7ba7b9599a98f68d9142e81a97 before 797323d1cf92d09b7a017cfec576d9babf99cde7; affected 5ec8e8ea8b7783fab150cf86404fc38cb4db8800 before adccdf702b4ea913ded5ff512239e382d7473b63; affected 5ec8e8ea8b7783fab150cf86404fc38cb4db8800 before 82f0b6f041fad768c28b4ad05a683065412c226e; affected 3a01daace71b521563c38bbbf874e14c3e58adb7; affected 5.10.210 before 5.10.222; affected 5.15.149 before 5.15.163; affected 6.1.76 before 6.1.100; affected 6.6.15 before 6.6.41; affected 6.7.3 before 6.8 |
| Linux / Linux | affected 6.8; unaffected 0 before 6.8; unaffected 5.10.222 through 5.10.*; unaffected 5.15.163 through 5.15.*; unaffected 6.1.100 through 6.1.*; unaffected 6.6.41 through 6.6.*; unaffected 6.9.10 through 6.9.*; unaffected 6.10 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/0100aeb8a12d51950418e685f879cc80cb8e5982
- https://git.kernel.org/stable/c/bc17f2377818dca643a74499c3f5333500c90503
- https://git.kernel.org/stable/c/941e816185661bf2b44b488565d09444ae316509
- https://git.kernel.org/stable/c/797323d1cf92d09b7a017cfec576d9babf99cde7
- https://git.kernel.org/stable/c/adccdf702b4ea913ded5ff512239e382d7473b63
- https://git.kernel.org/stable/c/82f0b6f041fad768c28b4ad05a683065412c226e
ADP enrichment
No English description supplied.
- https://git.kernel.org/stable/c/0100aeb8a12d51950418e685f879cc80cb8e5982
- https://git.kernel.org/stable/c/bc17f2377818dca643a74499c3f5333500c90503
- https://git.kernel.org/stable/c/941e816185661bf2b44b488565d09444ae316509
- https://git.kernel.org/stable/c/797323d1cf92d09b7a017cfec576d9babf99cde7
- https://git.kernel.org/stable/c/adccdf702b4ea913ded5ff512239e382d7473b63
- https://git.kernel.org/stable/c/82f0b6f041fad768c28b4ad05a683065412c226e
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
No English description supplied.
No references supplied.