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Echo: linux: security update to 6.1.180-1

high Tenable Self-Hosted Container Security Plugin ID 464248

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - In the Linux kernel, the following vulnerability has been resolved: f2fs: bound i_inline_xattr_size for
 non-inline-xattr inodes When the flexible_inline_xattr feature is enabled, do_read_inode() loads the on-
 disk i_inline_xattr_size unconditionally: if (f2fs_sb_has_flexible_inline_xattr(sbi))
 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size); but sanity_check_inode() only range-checks
 it when the inode also has the FI_INLINE_XATTR flag set. An inode that carries an inline dentry or inline
 data but not FI_INLINE_XATTR -- the normal layout for an inline directory -- therefore keeps a fully
 attacker-controlled i_inline_xattr_size from a crafted image. get_inline_xattr_addrs() returns that value
 with no flag gating, so it feeds the inode geometry: MAX_INLINE_DATA() = 4 * (CUR_ADDRS_PER_INODE -
 i_inline_xattr_size - 1) NR_INLINE_DENTRY() = MAX_INLINE_DATA() * BITS_PER_BYTE / (...) addrs_per_page() =
 CUR_ADDRS_PER_INODE - i_inline_xattr_size A large i_inline_xattr_size drives MAX_INLINE_DATA() and
 NR_INLINE_DENTRY() negative, so make_dentry_ptr_inline() sets d->max (int) to a negative value. The inline
 directory walk then compares an unsigned long bit_pos against that negative d->max, which is promoted to a
 huge unsigned bound, and reads far past the inline area: while (bit_pos < d->max) /* fs/f2fs/dir.c */ ...
 test_bit_le(bit_pos, d->bitmap) / d->dentry[bit_pos] ... Mounting a crafted image and reading such a
 directory triggers an out-of-bounds read in f2fs_fill_dentries(); the same underflow also corrupts
 ADDRS_PER_INODE for regular files. Validate i_inline_xattr_size against MAX_INLINE_XATTR_SIZE whenever the
 flexible_inline_xattr feature is enabled -- i.e. whenever the value is loaded from disk and consumed --
 and keep the lower MIN_INLINE_XATTR_SIZE bound gated on inodes that actually carry an inline xattr, so
 legitimate inodes with i_inline_xattr_size == 0 are still accepted. (CVE-2026-63815)

Solution

Update the linux library and its related packages to version 6.1.180-1 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-63815

Plugin Details

Severity: High

ID: 464248

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/2/2026

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.11

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2026-63815

CVSS v3

Risk Factor: High

Base Score: 8.4

Temporal Score: 7.3

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 7/19/2026

Vulnerability Publication Date: 7/19/2026

Reference Information

CVE: CVE-2026-63815