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TI-2024-27278 Aliases CVE-2024-40914GHSA-pqrm-m338-wr89

mm/huge_memory: don't unpoison huge_zero_folio

Priority LOW 25Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 10 fixed, 2 without a fix

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.

Summary

In the Linux kernel, the following vulnerability has been resolved: mm/huge_memory: don't unpoison huge_zero_folio When I did memory failure tests recently, below panic occurs: kernel BUG at include/linux/mm.h:1135! invalid opcode: 0000 [#1] PREEMPT SMP NOPTI CPU: 9 PID: 137 Comm: kswapd1 Not tainted 6.9.0-rc4-00491-gd5ce28f156fe-dirty #14 RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0 RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246 RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8 RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0 RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492 R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00 FS: 0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0 Call Trace: <TASK> do_shrink_slab+0x14f/0x6a0 shrink_slab+0xca/0x8c0 shrink_node+0x2d0/0x7d0 balance_pgdat+0x33a/0x720 kswapd+0x1f3/0x410 kthread+0xd5/0x100 ret_from_fork+0x2f/0x50 ret_from_fork_asm+0x1a/0x30 </TASK> Modules linked in: mce_inject hwpoison_inject ---[ end trace 0000000000000000 ]--- RIP: 0010:shrink_huge_zero_page_scan+0x168/0x1a0 RSP: 0018:ffff9933c6c57bd0 EFLAGS: 00000246 RAX: 000000000000003e RBX: 0000000000000000 RCX: ffff88f61fc5c9c8 RDX: 0000000000000000 RSI: 0000000000000027 RDI: ffff88f61fc5c9c0 RBP: ffffcd7c446b0000 R08: ffffffff9a9405f0 R09: 0000000000005492 R10: 00000000000030ea R11: ffffffff9a9405f0 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff88e703c4ac00 FS: 0000000000000000(0000) GS:ffff88f61fc40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f4da6e9878 CR3: 0000000c71048000 CR4: 00000000000006f0 The root cause is that HWPoison flag will be set for huge_zero_folio without increasing the folio refcnt. But then unpoison_memory() will decrease the folio refcnt unexpectedly as it appears like a successfully hwpoisoned folio leading to VM_BUG_ON_PAGE(page_ref_count(page) == 0) when releasing huge_zero_folio. Skip unpoisoning huge_zero_folio in unpoison_memory() to fix this issue. We're not prepared to unpoison huge_zero_folio yet.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00277 20th percentileScored 2026-11-07
Fix Partial Linux (Linux): 5.15.162, 5.18, 6.1.95 +3Red Hat: 3 advisoriesRed Hat: 10 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
LinuxLinux5.15.41 to before 5.15.162; 5.17.9 to before 5.185.15.162, 5.18Patch availableCNA
LinuxLinux5.18 and later5.15.162, 6.1.95, 6.6.35, 6.9.6, 6.10Patch availableCNA
  • Linux VendorLinux Affected 5.15.41 to before 5.15.162; 5.17.9 to before 5.18 Fixed in 5.15.162, 5.18 Patch available CNA
  • Linux VendorLinux Affected 5.18 and later Fixed in 5.15.162, 6.1.95, 6.6.35, 6.9.6, 6.10 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*5.15.41 to before 5.15.162; 5.17.9 to before 5.18; 5.18.1 to before 6.1.95; 6.2 to before 6.6.35; 6.7 to before 6.9.6VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:*5.18VulnerableLinux
cpe:2.3:o:linux:linux_kernel:5.18:rc7:*:*:*:*:*:*5.18 rc7VulnerableLinux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions 5.15.41 to before 5.15.162; 5.17.9 to before 5.18; 5.18.1 to before 6.1.95; 6.2 to before 6.6.35; 6.7 to before 6.9.6 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.18:-:*:*:*:*:*:* Versions 5.18 Vulnerable ·Linux
  • cpe:2.3:o:linux:linux_kernel:5.18:rc7:*:*:*:*:*:* Versions 5.18 rc7 Vulnerable ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 5.15.162, 5.18
  • Fix · CNA Linux (Linux) Fixed in 5.15.162, 6.1.95, 6.6.35, 6.9.6, 6.10

Red Hat 3 advisories

  • RHSA-2024:6267 Released 2024-09-04 · Red Hat rating Moderate
    kernel security update
    • Red Hat CodeReady Linux Builder EUS (v.9.2) kernel-tools-libs-devel-5.14.0-284.82.1.el9_2
    • Red Hat Enterprise Linux AppStream EUS (v.9.2) kernel-64k-debug-devel-5.14.0-284.82.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.82.1.el9_2, kernel-64k-devel-5.14.0-284.82.1.el9_2 +9
    • Red Hat Enterprise Linux BaseOS EUS (v.9.2) bpftool-7.0.0-284.82.1.el9_2, kernel-5.14.0-284.82.1.el9_2, kernel-64k-5.14.0-284.82.1.el9_2 +29
  • RHSA-2024:6268 Released 2024-09-04 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time EUS (v.9.2) kernel-rt-5.14.0-284.82.1.rt14.367.el9_2, kernel-rt-core-5.14.0-284.82.1.rt14.367.el9_2, kernel-rt-debug-5.14.0-284.82.1.rt14.367.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2) kernel-rt-5.14.0-284.82.1.rt14.367.el9_2, kernel-rt-core-5.14.0-284.82.1.rt14.367.el9_2, kernel-rt-debug-5.14.0-284.82.1.rt14.367.el9_2 +11
  • RHSA-2024:5928 Released 2024-08-28 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.33.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.33.1.el9_4, kernel-64k-devel-5.14.0-427.33.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.33.1.el9_4, kernel-5.14.0-427.33.1.el9_4, kernel-64k-5.14.0-427.33.1.el9_4 +29
    • Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.33.1.el9_4, libperf-5.14.0-427.33.1.el9_4
    • Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.33.1.el9_4, kernel-rt-core-5.14.0-427.33.1.el9_4, kernel-rt-debug-5.14.0-427.33.1.el9_4 +11
    • Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.33.1.el9_4, kernel-rt-core-5.14.0-427.33.1.el9_4, kernel-rt-debug-5.14.0-427.33.1.el9_4 +9

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 7AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat CodeReady Linux Builder EUS (v.9.2)Fixed RHSA-2024:6267
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:5928
Red Hat Enterprise Linux AppStream EUS (v.9.2)Fixed RHSA-2024:6267
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2024:5928
Red Hat Enterprise Linux BaseOS EUS (v.9.2)Fixed RHSA-2024:6267
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2024:5928
Red Hat Enterprise Linux NFV (v. 9)Fixed RHSA-2024:5928
Red Hat Enterprise Linux RT (v. 9)Fixed RHSA-2024:5928
Red Hat Enterprise Linux Real Time EUS (v.9.2)Fixed RHSA-2024:6268
Red Hat Enterprise Linux Real Time for NFV EUS (v.9.2)Fixed RHSA-2024:6268
Not affected: 3 products
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux AppStream EUS (v.9.2)

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-40914
  2. 2026-10-03 Alias added: GHSA-pqrm-m338-wr89
  3. 2026-11-05 Affected versions changed · Red Hat

References

Patch 5

  • TI-2025-26358 tls: fix handling of zero-length records on the rx_list KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-38352 netfilter: bridge: make ebt_snat ARP rewrite writable KEVCVSS 3.1HIGH 8.8
  • TI-2013-05264 The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the… KEVCVSS 3.1HIGH 8.8
  • TI-2022-00125 Integer overflow in kernel KEVCVSS 3.1HIGH 8.4
  • TI-2013-01864 The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9… KEVCVSS 3.1HIGH 8.4
  • TI-2021-05514 Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACE KEVCVSS 3.1HIGH 8.3
See all 15278 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences