In the Linux kernel, the following vulnerability has been resolved:
mm/debug_vm_pgtable: fix BUG_ON with pud advanced test
Architectures like powerpc add debug checks to ensure we find only devmap
PUD pte entries. These debug checks are only done with CONFIG_DEBUG_VM.
This patch marks the ptes used for PUD advanced test devmap pte entries so
that we don't hit on debug checks on architecture like ppc64 as below.
WARNING: CPU: 2 PID: 1 at arch/powerpc/mm/book3s64/radix_pgtable.c:1382 radix__pud_hugepage_update+0x38/0x138
....
NIP [c0000000000a7004] radix__pud_hugepage_update+0x38/0x138
LR [c0000000000a77a8] radix__pudp_huge_get_and_clear+0x28/0x60
Call Trace:
[c000000004a2f950] [c000000004a2f9a0] 0xc000000004a2f9a0 (unreliable)
[c000000004a2f980] [000d34c100000000] 0xd34c100000000
[c000000004a2f9a0] [c00000000206ba98] pud_advanced_tests+0x118/0x334
[c000000004a2fa40] [c00000000206db34] debug_vm_pgtable+0xcbc/0x1c48
[c000000004a2fc10] [c00000000000fd28] do_one_initcall+0x60/0x388
Also
kernel BUG at arch/powerpc/mm/book3s64/pgtable.c:202!
....
NIP [c000000000096510] pudp_huge_get_and_clear_full+0x98/0x174
LR [c00000000206bb34] pud_advanced_tests+0x1b4/0x334
Call Trace:
[c000000004a2f950] [000d34c100000000] 0xd34c100000000 (unreliable)
[c000000004a2f9a0] [c00000000206bb34] pud_advanced_tests+0x1b4/0x334
[c000000004a2fa40] [c00000000206db34] debug_vm_pgtable+0xcbc/0x1c48
[c000000004a2fc10] [c00000000000fd28] do_one_initcall+0x60/0x388
References
| Link | Resource |
|---|---|
| https://git.kernel.org/stable/c/720da1e593b85a550593b415bf1d79a053133451 | Patch Mailing List |
| https://git.kernel.org/stable/c/720da1e593b85a550593b415bf1d79a053133451 | Patch Mailing List |
| https://git.kernel.org/stable/c/d2a9510c0e39d06f5544075c13040407bdbf2803 | Patch Mailing List |
| https://git.kernel.org/stable/c/d2a9510c0e39d06f5544075c13040407bdbf2803 | Patch Mailing List |
| https://git.kernel.org/stable/c/eeeddf85fc58d48c58ad916e4ca12363ebd8ab21 | Patch Mailing List |
| https://git.kernel.org/stable/c/eeeddf85fc58d48c58ad916e4ca12363ebd8ab21 | Patch Mailing List |
Configurations
Configuration 1 (hide)
|
History
03 Mar 2025, 17:47
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.5 |
| CPE | cpe:2.3:o:linux:linux_kernel:6.8:rc6:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc5:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc3:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc4:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:6.8:rc2:*:*:*:*:*:* |
|
| References | () https://git.kernel.org/stable/c/d2a9510c0e39d06f5544075c13040407bdbf2803 - Patch, Mailing List | |
| References | () https://git.kernel.org/stable/c/720da1e593b85a550593b415bf1d79a053133451 - Patch, Mailing List | |
| References | () https://git.kernel.org/stable/c/eeeddf85fc58d48c58ad916e4ca12363ebd8ab21 - Patch, Mailing List | |
| First Time |
Linux linux Kernel
Linux |
17 Apr 2024, 11:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2024-04-17 11:15
Updated : 2025-03-03 17:47
NVD link : CVE-2024-26850
Mitre link : CVE-2024-26850
JSON object : View
Products Affected
linux
- linux_kernel
CWE
No CWE.