CVE-2024-49900— jfs: Fix uninit-value access of new_ea in ea_buffer
Possible ATT&CK Techniques 1AI
T1068 · Exploitation for Privilege EscalationAffected Version Matrix 20
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 7b24d41d47a6805c45378debf8bd115675d41da8 | affected |
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< dac398ed272a378d2f42ac68ae408333a51baf52 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8b1dcf25c26d42e4a68c4725ce52a0543c7878cc | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< d7444f91a9f93eaa48827087ed0f3381c194181d | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 6041536d18c5f51a84bc37cd568cbab61870031e | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< c076b3746224982eebdba5c9e4b1467e146c0d64 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 7c244d5b48284a770d96ff703df2dfeadf804a73 | affected | ||
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2< 8ad8b531de79c348bcb8133e7f5e827b884226af | affected | ||
| … +12 more rows | |||
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I. Basic Information for CVE-2024-49900
Vulnerability Information
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Vulnerability Title
jfs: Fix uninit-value access of new_ea in ea_buffer
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: jfs: Fix uninit-value access of new_ea in ea_buffer syzbot reports that lzo1x_1_do_compress is using uninit-value: ===================================================== BUG: KMSAN: uninit-value in lzo1x_1_do_compress+0x19f9/0x2510 lib/lzo/lzo1x_compress.c:178 ... Uninit was stored to memory at: ea_put fs/jfs/xattr.c:639 [inline] ... Local variable ea_buf created at: __jfs_setxattr+0x5d/0x1ae0 fs/jfs/xattr.c:662 __jfs_xattr_set+0xe6/0x1f0 fs/jfs/xattr.c:934 ===================================================== The reason is ea_buf->new_ea is not initialized properly. Fix this by using memset to empty its content at the beginning in ea_get().
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
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jfs文件系统在ea_buffer处理中未初始化值的使用。
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-2024-49900
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2024-49900 (1)
Same Patch Batch · Linux · 2024-10-21 · 372 CVEs total
| CVE-2024-50019 | kthread: unpark only parked kthread | |
| CVE-2024-50030 | drm/xe/ct: prevent UAF in send_recv() | |
| CVE-2024-50028 | thermal: core: Reference count the zone in thermal_zone_get_by_id() | |
| CVE-2024-50029 | Bluetooth: hci_conn: Fix UAF in hci_enhanced_setup_sync | |
| CVE-2024-50027 | thermal: core: Free tzp copy along with the thermal zone | |
| CVE-2024-50025 | scsi: fnic: Move flush_work initialization out of if block | |
| CVE-2024-50026 | scsi: wd33c93: Don't use stale scsi_pointer value | |
| CVE-2024-50023 | net: phy: Remove LED entry from LEDs list on unregister | |
| CVE-2024-50024 | net: Fix an unsafe loop on the list | |
| CVE-2024-50022 | device-dax: correct pgoff align in dax_set_mapping() | |
| CVE-2024-50021 | ice: Fix improper handling of refcount in ice_dpll_init_rclk_pins() | |
| CVE-2024-50020 | ice: Fix improper handling of refcount in ice_sriov_set_msix_vec_count() | |
| CVE-2024-50011 | ASoC: Intel: soc-acpi-intel-rpl-match: add missing empty item | |
| CVE-2024-50006 | ext4: fix i_data_sem unlock order in ext4_ind_migrate() | |
| CVE-2024-50007 | ALSA: asihpi: Fix potential OOB array access | |
| CVE-2024-50008 | wifi: mwifiex: Fix memcpy() field-spanning write warning in mwifiex_cmd_802_11_scan_ext() | |
| CVE-2024-50009 | cpufreq: amd-pstate: add check for cpufreq_cpu_get's return value | |
| CVE-2024-50010 | exec: don't WARN for racy path_noexec check | |
| CVE-2024-50014 | ext4: fix access to uninitialised lock in fc replay path | |
| CVE-2024-50017 | x86/mm/ident_map: Use gbpages only where full GB page should be mapped. |
Showing top 20 of 372 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-53366
ipv4: account for fraggap on the paged allocation path - CVE-2026-53365
vsock/virtio: fix zerocopy completion for multi-skb sends - CVE-2026-53364
Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate - CVE-2026-53363
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_fr - CVE-2026-53362
ipv6: account for fraggap on the paged allocation path
Same vendor: Linux
- CVE-2026-53366
ipv4: account for fraggap on the paged allocation path - CVE-2026-53365
vsock/virtio: fix zerocopy completion for multi-skb sends - CVE-2026-53364
Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate - CVE-2026-53363
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_fr - CVE-2026-53362
ipv6: account for fraggap on the paged allocation path
V. Comments for CVE-2024-49900
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