Read the docs
TI-2022-26130 Aliases CVE-2022-50673GHSA-8h9v-mf84-vh83

ext4: fix use-after-free in ext4_orphan_cleanup

Priority LOW 33Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 28 fixed, 2 without a fix

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

Summary

In the Linux kernel, the following vulnerability has been resolved: ext4: fix use-after-free in ext4_orphan_cleanup I caught a issue as follows: ================================================================== BUG: KASAN: use-after-free in __list_add_valid+0x28/0x1a0 Read of size 8 at addr ffff88814b13f378 by task mount/710 CPU: 1 PID: 710 Comm: mount Not tainted 6.1.0-rc3-next #370 Call Trace: <TASK> dump_stack_lvl+0x73/0x9f print_report+0x25d/0x759 kasan_report+0xc0/0x120 __asan_load8+0x99/0x140 __list_add_valid+0x28/0x1a0 ext4_orphan_cleanup+0x564/0x9d0 [ext4] __ext4_fill_super+0x48e2/0x5300 [ext4] ext4_fill_super+0x19f/0x3a0 [ext4] get_tree_bdev+0x27b/0x450 ext4_get_tree+0x19/0x30 [ext4] vfs_get_tree+0x49/0x150 path_mount+0xaae/0x1350 do_mount+0xe2/0x110 __x64_sys_mount+0xf0/0x190 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x63/0xcd </TASK> [...] ================================================================== Above issue may happen as follows: ------------------------------------- ext4_fill_super ext4_orphan_cleanup --- loop1: assume last_orphan is 12 --- list_add(&EXT4_I(inode)->i_orphan, &EXT4_SB(sb)->s_orphan) ext4_truncate --> return 0 ext4_inode_attach_jinode --> return -ENOMEM iput(inode) --> free inode<12> --- loop2: last_orphan is still 12 --- list_add(&EXT4_I(inode)->i_orphan, &EXT4_SB(sb)->s_orphan); // use inode<12> and trigger UAF To solve this issue, we need to propagate the return value of ext4_inode_attach_jinode() appropriately.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00209 11th percentileScored 2026-11-07
Fix Partial Linux (Linux): 4.19.270, 5.4.229, 5.10.163 +4Red Hat: 13 advisoriesRed Hat: 28 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
LinuxLinux4.10 and later4.19.270, 5.4.229, 5.10.163, 5.15.87, 6.0.18, 6.1.4, 6.2Patch availableCNA
  • Linux VendorLinux Affected 4.10 and later Fixed in 4.19.270, 5.4.229, 5.10.163, 5.15.87, 6.0.18, 6.1.4, 6.2 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*——Linux
  • cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* Versions — — ·Linux

Remediation

  • Fix · CNA Linux (Linux) Fixed in 4.19.270, 5.4.229, 5.10.163, 5.15.87, 6.0.18, 6.1.4, 6.2

Red Hat 13 advisories

  • RHSA-2026:3685 Released 2026-03-03 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux Server (v. 7 ELS) bpftool-3.10.0-1160.147.1.el7, kernel-3.10.0-1160.147.1.el7, kernel-abi-whitelists-3.10.0-1160.147.1.el7 +11
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) kernel-debug-devel-3.10.0-1160.147.1.el7, kernel-tools-libs-devel-3.10.0-1160.147.1.el7
  • RHSA-2026:3634 Released 2026-03-03 · Red Hat rating Important
    kernel-rt security update
    • Red Hat Enterprise Linux for Real Time (v. 7 ELS) kernel-rt-3.10.0-1160.147.1.rt56.1299.el7, kernel-rt-debug-3.10.0-1160.147.1.rt56.1299.el7, kernel-rt-debug-devel-3.10.0-1160.147.1.rt56.1299.el7 +4
  • RHSA-2026:3360 Released 2026-02-25 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.4) bpftool-4.18.0-305.186.1.el8_4, kernel-4.18.0-305.186.1.el8_4, kernel-abi-stablelists-4.18.0-305.186.1.el8_4 +14
    • Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4) bpftool-4.18.0-305.186.1.el8_4, kernel-4.18.0-305.186.1.el8_4, kernel-abi-stablelists-4.18.0-305.186.1.el8_4 +14
Show 10 more Red Hat advisories
  • RHSA-2026:3358 Released 2026-02-25 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux Real Time E4S (v.9.2) kernel-rt-5.14.0-284.158.1.rt14.443.el9_2, kernel-rt-core-5.14.0-284.158.1.rt14.443.el9_2, kernel-rt-debug-5.14.0-284.158.1.rt14.443.el9_2 +9
    • Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2) kernel-rt-5.14.0-284.158.1.rt14.443.el9_2, kernel-rt-core-5.14.0-284.158.1.rt14.443.el9_2, kernel-rt-debug-5.14.0-284.158.1.rt14.443.el9_2 +11
  • RHSA-2026:3277 Released 2026-02-25 · Red Hat rating Important
    kernel security update
    • Red Hat Enterprise Linux BaseOS E4S (v.8.8) bpftool-4.18.0-477.130.1.el8_8, kernel-4.18.0-477.130.1.el8_8, kernel-abi-stablelists-4.18.0-477.130.1.el8_8 +14
    • Red Hat Enterprise Linux BaseOS TUS (v.8.8) bpftool-4.18.0-477.130.1.el8_8, kernel-4.18.0-477.130.1.el8_8, kernel-abi-stablelists-4.18.0-477.130.1.el8_8 +14
  • RHSA-2026:3267 Released 2026-02-25 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) kernel-64k-debug-devel-5.14.0-284.158.1.el9_2, kernel-64k-debug-devel-matched-5.14.0-284.158.1.el9_2, kernel-64k-devel-5.14.0-284.158.1.el9_2 +10
    • Red Hat Enterprise Linux BaseOS E4S (v.9.2) bpftool-7.0.0-284.158.1.el9_2, kernel-5.14.0-284.158.1.el9_2, kernel-64k-5.14.0-284.158.1.el9_2 +29
  • RHSA-2026:2664 Released 2026-02-12 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v. 8.2) bpftool-4.18.0-193.185.1.el8_2, kernel-4.18.0-193.185.1.el8_2, kernel-abi-whitelists-4.18.0-193.185.1.el8_2 +14
  • RHSA-2026:2577 Released 2026-02-11 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV E4S (v.9.0) kernel-rt-5.14.0-70.165.1.rt21.237.el9_0, kernel-rt-core-5.14.0-70.165.1.rt21.237.el9_0, kernel-rt-debug-5.14.0-70.165.1.rt21.237.el9_0 +9
    • Red Hat Enterprise Linux Real Time E4S (v.9.0) kernel-rt-5.14.0-70.165.1.rt21.237.el9_0, kernel-rt-core-5.14.0-70.165.1.rt21.237.el9_0, kernel-rt-debug-5.14.0-70.165.1.rt21.237.el9_0 +7
  • RHSA-2026:2573 Released 2026-02-11 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.0) kernel-debug-devel-5.14.0-70.165.1.el9_0, kernel-debug-devel-matched-5.14.0-70.165.1.el9_0, kernel-devel-5.14.0-70.165.1.el9_0 +5
    • Red Hat Enterprise Linux BaseOS E4S (v.9.0) bpftool-5.14.0-70.165.1.el9_0, kernel-5.14.0-70.165.1.el9_0, kernel-abi-stablelists-5.14.0-70.165.1.el9_0 +14
  • RHSA-2026:2490 Released 2026-02-11 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS AUS (v.8.6) bpftool-4.18.0-372.179.1.el8_6, kernel-4.18.0-372.179.1.el8_6, kernel-abi-stablelists-4.18.0-372.179.1.el8_6 +14
    • Red Hat Enterprise Linux BaseOS E4S (v.8.6) bpftool-4.18.0-372.179.1.el8_6, kernel-4.18.0-372.179.1.el8_6, kernel-abi-stablelists-4.18.0-372.179.1.el8_6 +19
    • Red Hat Enterprise Linux BaseOS TUS (v.8.6) bpftool-4.18.0-372.179.1.el8_6, kernel-4.18.0-372.179.1.el8_6, kernel-abi-stablelists-4.18.0-372.179.1.el8_6 +14
  • RHSA-2026:2378 Released 2026-02-10 · Red Hat rating Moderate
    kernel-rt security update
    • Red Hat Enterprise Linux NFV (v. 8) kernel-rt-4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-core-4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-debug-4.18.0-553.104.1.rt7.445.el8_10 +9
    • Red Hat Enterprise Linux RT (v. 8) kernel-rt-4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-core-4.18.0-553.104.1.rt7.445.el8_10, kernel-rt-debug-4.18.0-553.104.1.rt7.445.el8_10 +7
  • RHSA-2026:2264 Released 2026-02-09 · Red Hat rating Moderate
    kernel security update
    • Red Hat Enterprise Linux BaseOS (v. 8) bpftool-4.18.0-553.104.1.el8_10, kernel-4.18.0-553.104.1.el8_10, kernel-abi-stablelists-4.18.0-553.104.1.el8_10 +19
    • Red Hat Enterprise Linux CRB (v. 8) kernel-tools-libs-devel-4.18.0-553.104.1.el8_10
  • RHSA-2024:2394 Released 2024-04-30 · Red Hat rating Important
    kernel security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) kernel-64k-debug-devel-5.14.0-427.13.1.el9_4, kernel-64k-debug-devel-matched-5.14.0-427.13.1.el9_4, kernel-64k-devel-5.14.0-427.13.1.el9_4 +11
    • Red Hat Enterprise Linux BaseOS (v. 9) bpftool-7.3.0-427.13.1.el9_4, kernel-5.14.0-427.13.1.el9_4, kernel-64k-5.14.0-427.13.1.el9_4 +29
    • Red Hat Enterprise Linux CRB (v. 9) kernel-tools-libs-devel-5.14.0-427.13.1.el9_4, libperf-5.14.0-427.13.1.el9_4
    • Red Hat Enterprise Linux NFV (v. 9) kernel-rt-5.14.0-427.13.1.el9_4, kernel-rt-core-5.14.0-427.13.1.el9_4, kernel-rt-debug-5.14.0-427.13.1.el9_4 +11
    • Red Hat Enterprise Linux RT (v. 9) kernel-rt-5.14.0-427.13.1.el9_4, kernel-rt-core-5.14.0-427.13.1.el9_4, kernel-rt-debug-5.14.0-427.13.1.el9_4 +9

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 9AffectedNo fix yet
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux AppStream E4S (v.9.0)Fixed RHSA-2026:2573
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:3267
Red Hat Enterprise Linux BaseOS (v. 8)Fixed RHSA-2026:2264
Red Hat Enterprise Linux BaseOS (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux BaseOS AUS (v. 8.2)Fixed RHSA-2026:2664
Red Hat Enterprise Linux BaseOS AUS (v.8.4)Fixed RHSA-2026:3360
Red Hat Enterprise Linux BaseOS AUS (v.8.6)Fixed RHSA-2026:2490
Red Hat Enterprise Linux BaseOS E4S (v.8.6)Fixed RHSA-2026:2490
Red Hat Enterprise Linux BaseOS E4S (v.8.8)Fixed RHSA-2026:3277
Red Hat Enterprise Linux BaseOS E4S (v.9.0)Fixed RHSA-2026:2573
Red Hat Enterprise Linux BaseOS E4S (v.9.2)Fixed RHSA-2026:3267
Red Hat Enterprise Linux BaseOS EUS EXTENSION (v.8.4)Fixed RHSA-2026:3360
Red Hat Enterprise Linux BaseOS TUS (v.8.6)Fixed RHSA-2026:2490
Red Hat Enterprise Linux BaseOS TUS (v.8.8)Fixed RHSA-2026:3277
Red Hat Enterprise Linux CRB (v. 8)Fixed RHSA-2026:2264
Red Hat Enterprise Linux CRB (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux NFV (v. 8)Fixed RHSA-2026:2378
Red Hat Enterprise Linux NFV (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux NFV E4S (v.9.0)Fixed RHSA-2026:2577
Red Hat Enterprise Linux RT (v. 8)Fixed RHSA-2026:2378
Red Hat Enterprise Linux RT (v. 9)Fixed RHSA-2024:2394
Red Hat Enterprise Linux Real Time E4S (v.9.0)Fixed RHSA-2026:2577
Red Hat Enterprise Linux Real Time E4S (v.9.2)Fixed RHSA-2026:3358
Red Hat Enterprise Linux Real Time for NFV E4S (v.9.2)Fixed RHSA-2026:3358
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:3685
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2026:3685
Red Hat Enterprise Linux for Real Time (v. 7 ELS)Fixed RHSA-2026:3634
Not affected: 1 product
  • Red Hat Enterprise Linux 10

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-50673
  2. 2026-10-03 Alias added: GHSA-8h9v-mf84-vh83
  3. 2026-10-29 Affected versions changed · Red Hat

References

Other 7

  • 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-2021-02452 Incorrect authorization in Ubuntu linux kernel 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
See all 21741 →

Sources

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