CVE-2022-50346: ext4: init quota for 'old.inode' in 'ext4_rename'

Modified

AliasesUBUNTU-CVE-2022-50346DEBIAN-CVE-2022-50346

Published 16-09-2025Last modified 11-05-2026

Vulnerability summary

CVE-2022-50346 is a medium (CVSS 5.5) Use of Uninitialized Resource vulnerability in linux. EPSS estimates a 0.16% chance of exploitation in the next 30 days, higher than 5.5% of scored vulnerabilities.

Priority

Routine

Not severe (CVSS 5.5, local access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?

CVSS score

5.5/10

010

Medium · v3.1 (CVE.org)

EPSS score

0.16%

0%100%

Low · 0.00 pp in 30 days

KEVNot listedNot listed by any tracked catalog.

RansomwareNot flaggedNo ransomware use recorded.

Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 7 · Related 5

RHSA-2024:2394 RHSA-2024:3138 SUSE-SU-2025:03614-1 SUSE-SU-2025:03615-1 SUSE-SU-2025:03628-1 SUSE-SU-2025:3716-1+1 more

Timeline

16-09-2025
PublishedVulnerability first disclosed.
11-05-2026
Last modifiedVulnerability information updated.

Description

In the Linux kernel, the following vulnerability has been resolved: ext4: init quota for 'old.inode' in 'ext4_rename' Syzbot found the following issue: ext4_parse_param: s_want_extra_isize=128 ext4_inode_info_init: s_want_extra_isize=32 ext4_rename: old.inode=ffff88823869a2c8 old.dir=ffff888238699828 new.inode=ffff88823869d7e8 new.dir=ffff888238699828 __ext4_mark_inode_dirty: inode=ffff888238699828 ea_isize=32 want_ea_size=128 __ext4_mark_inode_dirty: inode=ffff88823869a2c8 ea_isize=32 want_ea_size=128 ext4_xattr_block_set: inode=ffff88823869a2c8 ------------[ cut here ]------------ WARNING: CPU: 13 PID: 2234 at fs/ext4/xattr.c:2070 ext4_xattr_block_set.cold+0x22/0x980 Modules linked in: RIP: 0010:ext4_xattr_block_set.cold+0x22/0x980 RSP: 0018:ffff888227d3f3b0 EFLAGS: 00010202 RAX: 0000000000000001 RBX: ffff88823007a000 RCX: 0000000000000000 RDX: 0000000000000a03 RSI: 0000000000000040 RDI: ffff888230078178 RBP: 0000000000000000 R08: 000000000000002c R09: ffffed1075c7df8e R10: ffff8883ae3efc6b R11: ffffed1075c7df8d R12: 0000000000000000 R13: ffff88823869a2c8 R14: ffff8881012e0460 R15: dffffc0000000000 FS: 00007f350ac1f740(0000) GS:ffff8883ae200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f350a6ed6a0 CR3: 0000000237456000 CR4: 00000000000006e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> ? ext4_xattr_set_entry+0x3b7/0x2320 ? ext4_xattr_block_set+0x0/0x2020 ? ext4_xattr_set_entry+0x0/0x2320 ? ext4_xattr_check_entries+0x77/0x310 ? ext4_xattr_ibody_set+0x23b/0x340 ext4_xattr_move_to_block+0x594/0x720 ext4_expand_extra_isize_ea+0x59a/0x10f0 __ext4_expand_extra_isize+0x278/0x3f0 __ext4_mark_inode_dirty.cold+0x347/0x410 ext4_rename+0xed3/0x174f vfs_rename+0x13a7/0x2510 do_renameat2+0x55d/0x920 __x64_sys_rename+0x7d/0xb0 do_syscall_64+0x3b/0xa0 entry_SYSCALL_64_after_hwframe+0x72/0xdc As 'ext4_rename' will modify 'old.inode' ctime and mark inode dirty, which may trigger expand 'extra_isize' and allocate block. If inode didn't init quota will lead to warning. To solve above issue, init 'old.inode' firstly in 'ext4_rename'.

CVSS metrics

5 scores · 4 sources · 2 versions

v4.02.0v3.15.5

EPSS trend

Probability

0.16%

Chance of exploitation in the next 30 days

Percentile

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.16% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs

CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

CWE-908Use of Uninitialized ResourceThe product uses or accesses a resource that has not been initialized.

Affected systems

Version check

Known conditions: local access, low-privilege account, no user interaction (CVSS vector). Other conditions: not stated in public data.

Ubuntu121 products

linuxAll versions (No fix recorded) | < 4.15.0-208.220 | < 5.4.0-144.161 | < 5.15.0-69.76
linux-allwinner-5.19All versions (No fix recorded)
linux-awsAll versions (No fix recorded) | < 4.15.0-1153.166 | < 5.4.0-1097.105 | < 5.15.0-1033.37
linux-aws-5.0All versions (No fix recorded)
linux-aws-5.11All versions (No fix recorded)

linux-aws-5.13All versions (No fix recorded)
linux-aws-5.15< 5.15.0-1033.37~20.04.1
linux-aws-5.19All versions (No fix recorded)
linux-aws-5.3All versions (No fix recorded)
linux-aws-5.4< 5.4.0-1097.105~18.04.1
linux-aws-5.8All versions (No fix recorded)
linux-aws-6.2All versions (No fix recorded)
linux-aws-6.5All versions (No fix recorded)
linux-aws-fips< 4.15.0-2092.98 | All versions (No fix recorded) | < 5.4.0-1099.107+fips1
linux-aws-hwe< 4.15.0-1153.166~16.04.1
linux-azure< 4.15.0-1162.177~14.04.1 | < 4.15.0-1162.177~16.04.1 | All versions (No fix recorded) | < 5.4.0-1104.110 | < 5.15.0-1035.42
linux-azure-4.15< 4.15.0-1162.177
linux-azure-5.11All versions (No fix recorded)
linux-azure-5.13All versions (No fix recorded)
linux-azure-5.15< 5.15.0-1035.42~20.04.1
linux-azure-5.19All versions (No fix recorded)
linux-azure-5.3All versions (No fix recorded)
linux-azure-5.4< 5.4.0-1104.110~18.04.1
linux-azure-5.8All versions (No fix recorded)
linux-azure-6.11All versions (No fix recorded)
linux-azure-6.2All versions (No fix recorded)
linux-azure-6.5All versions (No fix recorded)
linux-azure-edgeAll versions (No fix recorded)
linux-azure-fdeAll versions (No fix recorded) | < 5.15.0-1035.42.1
linux-azure-fde-5.15< 5.15.0-1114.123~20.04.1
linux-azure-fde-5.19All versions (No fix recorded)
linux-azure-fde-6.2All versions (No fix recorded)
linux-azure-fips< 4.15.0-2071.77 | All versions (No fix recorded) | < 5.4.0-1104.110+fips1
linux-bluefield< 5.4.0-1059.65 | < 5.15.0-1015.17
linux-fipsAll versions (No fix recorded) | < 4.15.0-1108.119 | < 5.4.0-1073.82
linux-gcp< 4.15.0-1147.163~16.04.1 | All versions (No fix recorded) | < 5.4.0-1101.110 | < 5.15.0-1031.38
linux-gcp-4.15< 4.15.0-1147.163
linux-gcp-5.11All versions (No fix recorded)
linux-gcp-5.13All versions (No fix recorded)
linux-gcp-5.15< 5.15.0-1031.38~20.04.1
linux-gcp-5.19All versions (No fix recorded)
linux-gcp-5.3All versions (No fix recorded)
linux-gcp-5.4< 5.4.0-1101.110~18.04.1
linux-gcp-5.8All versions (No fix recorded)
linux-gcp-6.11All versions (No fix recorded)
linux-gcp-6.2All versions (No fix recorded)
linux-gcp-6.5All versions (No fix recorded)
linux-gcp-fips< 4.15.0-2055.60 | All versions (No fix recorded) | < 5.4.0-1101.110+fips1
linux-gkeAll versions (No fix recorded) | < 5.15.0-1030.35
linux-gke-4.15All versions (No fix recorded)
linux-gke-5.15All versions (No fix recorded)
linux-gke-5.4All versions (No fix recorded)
linux-gkeopAll versions (No fix recorded) | < 5.15.0-1017.22
linux-gkeop-5.15All versions (No fix recorded)
linux-gkeop-5.4All versions (No fix recorded)
linux-hwe< 4.15.0-208.219~16.04.1 | All versions (No fix recorded)
linux-hwe-5.11All versions (No fix recorded)
linux-hwe-5.13All versions (No fix recorded)
linux-hwe-5.15< 5.15.0-69.76~20.04.1
linux-hwe-5.19All versions (No fix recorded)
linux-hwe-5.4< 5.4.0-144.161~18.04.1
linux-hwe-5.8All versions (No fix recorded)
linux-hwe-6.11All versions (No fix recorded)
linux-hwe-6.2All versions (No fix recorded)
linux-hwe-6.5All versions (No fix recorded)
linux-hwe-edgeAll versions (No fix recorded)
linux-ibm< 5.4.0-1045.50 | < 5.15.0-1027.30
linux-ibm-5.4< 5.4.0-1045.50~18.04.1
linux-intelAll versions (No fix recorded)
linux-intel-5.13All versions (No fix recorded)
linux-intel-iot-realtimeAll versions (No fix recorded) | < 5.15.0-1023.28
linux-intel-iotg< 5.15.0-1027.32
linux-intel-iotg-5.15< 5.15.0-1027.32~20.04.1
linux-iot< 5.4.0-1013.15
linux-kvmAll versions (No fix recorded) | < 4.15.0-1137.142 | < 5.4.0-1087.93 | < 5.15.0-1030.35
linux-lowlatency< 5.15.0-69.76
linux-lowlatency-hwe-5.15< 5.15.0-69.76~20.04.1
linux-lowlatency-hwe-5.19All versions (No fix recorded)
linux-lowlatency-hwe-6.11All versions (No fix recorded)
linux-lowlatency-hwe-6.2All versions (No fix recorded)
linux-lowlatency-hwe-6.5All versions (No fix recorded)
linux-lts-xenialAll versions (No fix recorded)
linux-nvidia< 5.15.0-1023.23
linux-nvidia-6.2All versions (No fix recorded)
linux-nvidia-6.5All versions (No fix recorded)
linux-nvidia-tegra-5.15< 5.15.0-1014.14~20.04.1
linux-oemAll versions (No fix recorded)
linux-oem-5.10All versions (No fix recorded)
linux-oem-5.13All versions (No fix recorded)
linux-oem-5.14All versions (No fix recorded)
linux-oem-5.17All versions (No fix recorded)
linux-oem-5.6All versions (No fix recorded)
linux-oem-6.0All versions (No fix recorded)
linux-oem-6.1All versions (No fix recorded)
linux-oem-6.11All versions (No fix recorded)
linux-oem-6.5All versions (No fix recorded)
linux-oem-6.8All versions (No fix recorded)
linux-oracle< 4.15.0-1116.127~16.04.1 | < 4.15.0-1116.127 | < 5.4.0-1094.103 | < 5.15.0-1032.38
linux-oracle-5.0All versions (No fix recorded)
linux-oracle-5.11All versions (No fix recorded)
linux-oracle-5.13All versions (No fix recorded)
linux-oracle-5.15< 5.15.0-1032.38~20.04.1
linux-oracle-5.3All versions (No fix recorded)
linux-oracle-5.4< 5.4.0-1094.103~18.04.1
linux-oracle-5.8All versions (No fix recorded)
linux-oracle-6.5All versions (No fix recorded)
linux-raspi< 5.4.0-1081.92 | < 5.15.0-1026.28
linux-raspi-5.4< 5.4.0-1081.92~18.04.1
linux-raspi-realtimeAll versions (No fix recorded)
linux-raspi2All versions (No fix recorded)
linux-realtimeAll versions (No fix recorded) | < 5.15.0-1034.37
linux-riscvAll versions (No fix recorded)
linux-riscv-5.11All versions (No fix recorded)
linux-riscv-5.15< 5.15.0-1030.34~20.04.1
linux-riscv-5.19All versions (No fix recorded)
linux-riscv-5.8All versions (No fix recorded)
linux-riscv-6.5All versions (No fix recorded)
linux-starfive-5.19All versions (No fix recorded)
linux-starfive-6.2All versions (No fix recorded)
linux-starfive-6.5All versions (No fix recorded)
linux-xilinx-zynqmp< 5.4.0-1022.26

Show all 121

Linux2 products

linux≥ 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e, < 67f6d5a4043f3db0c6bb0e14a0d97a7be8bfb8b5 | ≥ 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e, < 33fd7031d634f3b46e59f61adfbb0ea9fe514fef | ≥ 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e, < 7dfb8259f66faafa68d23a261b284d2c2c67649b | ≥ 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e, < f263e349bacc2f303526dcfa61c4bc50132418b1 | ≥ 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e, < 84a2f2ed49d6a4d92b354219077434c57d334620 | ≥ 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e, < def7a39091e60e1c4a2f623629082a00092602be | ≥ 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e, < 135ba9146f4d38abed48a540ef8a8770ff0bd34f | ≥ 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e, < 13271fbbe85d73a7c47058f56a52f2a7f00d6e39 | ≥ 6dd4ee7cab7e3a17c571aebd444f4344c8c4946e, < fae381a3d79bb94aa2eb752170d47458d778b797 | 2.6.23
linux_kernel< 4.9.337 | ≥ 4.10, < 4.14.303 | ≥ 4.15, < 4.19.270 | ≥ 4.20, < 5.4.229 | ≥ 5.5, < 5.10.163 | ≥ 5.11, < 5.15.87 | ≥ 5.16, < 6.0.18 | ≥ 6.1, < 6.1.4

Debian1 product

linux< 6.1.4-1

3 vendors · 124 products

References

13 links

git.kernel.org/stable/c/67f6d5a4043f3db0c6bb0e14a0d97a7be8bfb8b5REPORTPatch
git.kernel.org/stable/c/33fd7031d634f3b46e59f61adfbb0ea9fe514fefREPORTPatch
git.kernel.org/stable/c/7dfb8259f66faafa68d23a261b284d2c2c67649bREPORTPatch
git.kernel.org/stable/c/f263e349bacc2f303526dcfa61c4bc50132418b1REPORTPatch
git.kernel.org/stable/c/84a2f2ed49d6a4d92b354219077434c57d334620REPORTPatch
git.kernel.org/stable/c/def7a39091e60e1c4a2f623629082a00092602beREPORTPatch
git.kernel.org/stable/c/135ba9146f4d38abed48a540ef8a8770ff0bd34fREPORTPatch
git.kernel.org/stable/c/13271fbbe85d73a7c47058f56a52f2a7f00d6e39REPORTPatch
git.kernel.org/stable/c/fae381a3d79bb94aa2eb752170d47458d778b797REPORTPatch
ubuntu.com/security/CVE-2022-50346REPORT

Show all 13 references