CVE-2022-49464— erofs: fix buffer copy overflow of ztailpacking feature
Possible ATT&CK Techniques 1AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 8
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | ab749badf9f41f32509cd103391b81ea7e684b76< 4d53a625f29074e7b8236c2c0e0922edb7608df9 | affected |
ab749badf9f41f32509cd103391b81ea7e684b76< 6b59e1907f58cf877c563dcf013159eb9f994b64 | affected | ||
ab749badf9f41f32509cd103391b81ea7e684b76< dcbe6803fffd387f72b48c2373b5f5ed12a5804b | affected | ||
5.17 | affected | ||
< 5.17 | unaffected | ||
5.17.14≤ 5.17.* | unaffected | ||
5.18.3≤ 5.18.* | unaffected | ||
5.19≤ * | unaffected |
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I. Basic Information for CVE-2022-49464
Vulnerability Information
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Vulnerability Title
erofs: fix buffer copy overflow of ztailpacking feature
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: erofs: fix buffer copy overflow of ztailpacking feature I got some KASAN report as below: [ 46.959738] ================================================================== [ 46.960430] BUG: KASAN: use-after-free in z_erofs_shifted_transform+0x2bd/0x370 [ 46.960430] Read of size 4074 at addr ffff8880300c2f8e by task fssum/188 ... [ 46.960430] Call Trace: [ 46.960430] <TASK> [ 46.960430] dump_stack_lvl+0x41/0x5e [ 46.960430] print_report.cold+0xb2/0x6b7 [ 46.960430] ? z_erofs_shifted_transform+0x2bd/0x370 [ 46.960430] kasan_report+0x8a/0x140 [ 46.960430] ? z_erofs_shifted_transform+0x2bd/0x370 [ 46.960430] kasan_check_range+0x14d/0x1d0 [ 46.960430] memcpy+0x20/0x60 [ 46.960430] z_erofs_shifted_transform+0x2bd/0x370 [ 46.960430] z_erofs_decompress_pcluster+0xaae/0x1080 The root cause is that the tail pcluster won't be a complete filesystem block anymore. So if ztailpacking is used, the second part of an uncompressed tail pcluster may not be ``rq->pageofs_out``.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于ztailpacking特性的缓冲区复制溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-49464
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2022-49464 (3)
Same Patch Batch · Linux · 2025-02-26 · 706 CVEs total
| CVE-2022-49561 | 9.8 CRITICAL | netfilter: conntrack: re-fetch conntrack after insertion |
| CVE-2022-49149 | 9.8 CRITICAL | rxrpc: Fix call timer start racing with call destruction |
| CVE-2022-49362 | 9.8 CRITICAL | NFSD: Fix potential use-after-free in nfsd_file_put() |
| CVE-2022-49201 | 9.8 CRITICAL | ibmvnic: fix race between xmit and reset |
| CVE-2022-49194 | 9.8 CRITICAL | net: bcmgenet: Use stronger register read/writes to assure ordering |
| CVE-2022-49093 | 9.8 CRITICAL | skbuff: fix coalescing for page_pool fragment recycling |
| CVE-2022-49260 | 9.8 CRITICAL | crypto: hisilicon/sec - fix the aead software fallback for engine |
| CVE-2022-49418 | 9.8 CRITICAL | NFSv4: Fix free of uninitialized nfs4_label on referral lookup. |
| CVE-2022-49094 | 9.8 CRITICAL | net/tls: fix slab-out-of-bounds bug in decrypt_internal |
| CVE-2022-49407 | 9.8 CRITICAL | dlm: fix plock invalid read |
| CVE-2022-49280 | 9.8 CRITICAL | NFSD: prevent underflow in nfssvc_decode_writeargs() |
| CVE-2022-49356 | 9.8 CRITICAL | SUNRPC: Trap RDMA segment overflows |
| CVE-2022-49058 | 9.1 CRITICAL | cifs: potential buffer overflow in handling symlinks |
| CVE-2022-49328 | 8.8 HIGH | mt76: fix use-after-free by removing a non-RCU wcid pointer |
| CVE-2022-49114 | 8.8 HIGH | scsi: libfc: Fix use after free in fc_exch_abts_resp() |
| CVE-2022-49470 | 8.8 HIGH | Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event |
| CVE-2022-49111 | 8.8 HIGH | Bluetooth: Fix use after free in hci_send_acl |
| CVE-2022-49535 | 8.8 HIGH | scsi: lpfc: Fix null pointer dereference after failing to issue FLOGI and PLOGI |
| CVE-2022-49471 | 8.8 HIGH | rtw89: cfo: check mac_id to avoid out-of-bounds |
| CVE-2022-49519 | 8.8 HIGH | ath10k: skip ath10k_halt during suspend for driver state RESTARTING |
Showing top 20 of 706 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-74583
net/sched: cls_route: fix fastmap use-after-free on filter - CVE-2026-74581
net: ipv6: clear suppressed fib6 rule result - CVE-2026-74582
packet: use consistent hard_header_len in non-ring send path - CVE-2026-74580
vhost: reset the vring metadata cache on vring reconfigurati - CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off
Same vendor: Linux
- CVE-2026-74583
net/sched: cls_route: fix fastmap use-after-free on filter - CVE-2026-74581
net: ipv6: clear suppressed fib6 rule result - CVE-2026-74582
packet: use consistent hard_header_len in non-ring send path - CVE-2026-74580
vhost: reset the vring metadata cache on vring reconfigurati - CVE-2026-74579
netfilter: nft_payload: fix mask build for partial field off
V. Comments for CVE-2022-49464
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