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CVE-2026-80591— f2fs: fix listxattr handling of corrupted xattr entries

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于f2fs文件系统在listxattr处理损坏的xattr条目时未正确验证条目有效性，可能导致返回成功的部分结果。

CVSS 7.8 · High EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1561 · Disk Wipe

Affected Version Matrix 24

VendorProduct Version RangeStatus
Linux Linux 688078e7f36c293dae25b338ddc9e0a2790f6e06< 7dfac47e4189692f35230f3064acf2540e6d75fe affected
688078e7f36c293dae25b338ddc9e0a2790f6e06< c8a10f174316e80d577e6549099b71a7a2111f3f affected
688078e7f36c293dae25b338ddc9e0a2790f6e06< dfa4891c27bccbd83d511a065721e85621f275a1 affected
688078e7f36c293dae25b338ddc9e0a2790f6e06< 2770041f34b52334ea63351ffb1cc2007a9de46e affected
688078e7f36c293dae25b338ddc9e0a2790f6e06< 7dd01f7d0291583e3e5420c95c7d584e114899bd affected
688078e7f36c293dae25b338ddc9e0a2790f6e06< ec9f79c8d5b28a928e65b67cd138c841571cf502 affected
688078e7f36c293dae25b338ddc9e0a2790f6e06< 3c0dbfecd859fd02fe9008f33a83146102ccd9ba affected
688078e7f36c293dae25b338ddc9e0a2790f6e06< 5ef5bc304f23c3fe255d4936472378dcb74d0e94 affected
… +16 more rows
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I. Basic Information for CVE-2026-80591

Vulnerability Information
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Vulnerability Title
f2fs: fix listxattr handling of corrupted xattr entries
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: f2fs: fix listxattr handling of corrupted xattr entries Validate the xattr entry before reading its fields in f2fs_listxattr(). Return -EFSCORRUPTED when the entry is outside the valid xattr storage area instead of returning a successful partial result.
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基金会开源的一个操作系统内核。 Linux kernel存在安全漏洞，该漏洞源于f2fs文件系统在listxattr处理损坏的xattr条目时未正确验证条目有效性，可能导致返回成功的部分结果。
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

Vendor Product Affected Versions CPE Subscribe
Linux Linux 688078e7f36c293dae25b338ddc9e0a2790f6e06 ~ 7dfac47e4189692f35230f3064acf2540e6d75fe -
Linux Linux 5.5 -

II. Public POCs for CVE-2026-80591

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III. Intelligence Information for CVE-2026-80591

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Patches & Fixes for CVE-2026-80591 (8)

Same Patch Batch · Linux · 2026-08-28 · 135 CVEs total

CVE-2026-80634 9.8 CRITICAL netfilter: flowtable: avoid num_encaps underflow on bridge VLAN untag
CVE-2026-80694 9.8 CRITICAL net: ethernet: mtk_eth_soc: pass eth to mtk_handle_irq_rx in poll_controller
CVE-2026-80681 9.8 CRITICAL vxlan: re-fetch eth header after route_shortcircuit()
CVE-2026-80674 9.8 CRITICAL ntfs: validate resident attribute lists and harden the validator
CVE-2026-80673 9.8 CRITICAL ntfs: bound the look-ahead attribute-list entry in ntfs_external_attr_find()
CVE-2026-80668 9.8 CRITICAL netfilter: nf_conntrack_expect: use conntrack GC to reap expectations
CVE-2026-80630 9.8 CRITICAL net/sched: sch_fq_codel: Do not call qdisc_tree_reduce_backlog during peek before restorin
CVE-2026-80617 9.8 CRITICAL net: airoha: fix foe_check_time allocation size
CVE-2026-80612 9.8 CRITICAL net: lwtunnel: Drop skb metadata before LWT encapsulation
CVE-2026-80714 9.8 CRITICAL ipvs: do not propagate one-packet flag to synced conns
CVE-2026-80609 9.8 CRITICAL qede: fix out-of-bounds check for cqe->len_list[]
CVE-2026-80600 9.8 CRITICAL batman-adv: dat: acquire ARP hw source only after skb realloc
CVE-2026-80693 9.3 CRITICAL idpf: bound interrupt-vector register fill to the allocated array
CVE-2026-80684 9.3 CRITICAL KVM: s390: pci: Fix NULL dereference on AIBV allocation failure
CVE-2026-80671 9.3 CRITICAL perf sched: Fix register_pid() overflow, strcpy, and BUG_ON
CVE-2026-80603 9.1 CRITICAL netfilter: nf_conntrack_irc: fix parse_dcc() off-by-one OOB read
CVE-2026-80670 9.1 CRITICAL perf tools: Use perf_env__get_cpu_topology() in machine__resolve()
CVE-2026-80721 8.8 HIGH Bluetooth: ISO: ensure no dangling hcon references in iso_conn
CVE-2026-80722 8.8 HIGH wifi: mac80211: validate individual TWT params before driver setup
CVE-2026-80724 8.8 HIGH ptp: vmclock: prevent read-only mappings from becoming writable

Showing top 20 of 135 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-80591

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