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CVE-2024-26901— do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak

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，该漏洞源于内核信息泄露。

AI Predicted 5.5 Difficulty: Hard EPSS 0.83% · P57

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 20

VendorProduct Version RangeStatus
Linux Linux 990d6c2d7aee921e3bce22b2d6a750fd552262be< 4bac28f441e3cc9d3f1a84c8d023228a68d8a7c1 affected
990d6c2d7aee921e3bce22b2d6a750fd552262be< 772a7def9868091da3bcb0d6c6ff9f0c03d7fa8b affected
990d6c2d7aee921e3bce22b2d6a750fd552262be< cde76b3af247f615447bcfecf610bb76c3529126 affected
990d6c2d7aee921e3bce22b2d6a750fd552262be< 423b6bdf19bbc5e1f7e7461045099917378f7e71 affected
990d6c2d7aee921e3bce22b2d6a750fd552262be< e6450d5e46a737a008b4885aa223486113bf0ad6 affected
990d6c2d7aee921e3bce22b2d6a750fd552262be< c1362eae861db28b1608b9dc23e49634fe87b63b affected
990d6c2d7aee921e3bce22b2d6a750fd552262be< cba138f1ef37ec6f961baeab62f312dedc7cf730 affected
990d6c2d7aee921e3bce22b2d6a750fd552262be< bf9ec1b24ab4e94345aa1c60811dd329f069c38b affected
… +12 more rows
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I. Basic Information for CVE-2024-26901

Vulnerability Information
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Vulnerability Title
do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak syzbot identified a kernel information leak vulnerability in do_sys_name_to_handle() and issued the following report [1]. [1] "BUG: KMSAN: kernel-infoleak in instrument_copy_to_user include/linux/instrumented.h:114 [inline] BUG: KMSAN: kernel-infoleak in _copy_to_user+0xbc/0x100 lib/usercopy.c:40 instrument_copy_to_user include/linux/instrumented.h:114 [inline] _copy_to_user+0xbc/0x100 lib/usercopy.c:40 copy_to_user include/linux/uaccess.h:191 [inline] do_sys_name_to_handle fs/fhandle.c:73 [inline] __do_sys_name_to_handle_at fs/fhandle.c:112 [inline] __se_sys_name_to_handle_at+0x949/0xb10 fs/fhandle.c:94 __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94 ... Uninit was created at: slab_post_alloc_hook+0x129/0xa70 mm/slab.h:768 slab_alloc_node mm/slub.c:3478 [inline] __kmem_cache_alloc_node+0x5c9/0x970 mm/slub.c:3517 __do_kmalloc_node mm/slab_common.c:1006 [inline] __kmalloc+0x121/0x3c0 mm/slab_common.c:1020 kmalloc include/linux/slab.h:604 [inline] do_sys_name_to_handle fs/fhandle.c:39 [inline] __do_sys_name_to_handle_at fs/fhandle.c:112 [inline] __se_sys_name_to_handle_at+0x441/0xb10 fs/fhandle.c:94 __x64_sys_name_to_handle_at+0xe4/0x140 fs/fhandle.c:94 ... Bytes 18-19 of 20 are uninitialized Memory access of size 20 starts at ffff888128a46380 Data copied to user address 0000000020000240" Per Chuck Lever's suggestion, use kzalloc() instead of kmalloc() to solve the problem.
Source: CVE Program / CVE List V5
CVSS Information
N/A
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，该漏洞源于内核信息泄露。
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 990d6c2d7aee921e3bce22b2d6a750fd552262be ~ 4bac28f441e3cc9d3f1a84c8d023228a68d8a7c1 -
Linux Linux 2.6.39 -

II. Public POCs for CVE-2024-26901

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III. Intelligence Information for CVE-2024-26901

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Patches & Fixes for CVE-2024-26901 (1)

Mailing List Discussions for CVE-2024-26901 (2)

Other References for CVE-2024-26901 (8)

Same Patch Batch · Linux · 2024-04-17 · 100 CVEs total

CVE-2024-26877 9.8 CRITICAL crypto: xilinx - call finalize with bh disabled
CVE-2024-26853 9.8 CRITICAL igc: avoid returning frame twice in XDP_REDIRECT
CVE-2024-26828 9.4 CRITICAL cifs: fix underflow in parse_server_interfaces()
CVE-2024-26856 8.8 HIGH net: sparx5: Fix use after free inside sparx5_del_mact_entry
CVE-2024-26822 8.7 HIGH smb: client: set correct id, uid and cruid for multiuser automounts
CVE-2024-26830 8.4 HIGH i40e: Do not allow untrusted VF to remove administratively set MAC
CVE-2024-26823 7.8 HIGH irqchip/gic-v3-its: Restore quirk probing for ACPI-based systems
CVE-2024-26880 7.8 HIGH dm: call the resume method on internal suspend
CVE-2024-26919 7.8 HIGH usb: ulpi: Fix debugfs directory leak
CVE-2024-26883 7.8 HIGH bpf: Fix stackmap overflow check on 32-bit arches
CVE-2024-26885 7.8 HIGH bpf: Fix DEVMAP_HASH overflow check on 32-bit arches
CVE-2024-26838 7.8 HIGH RDMA/irdma: Fix KASAN issue with tasklet
CVE-2024-26870 7.8 HIGH NFSv4.2: fix nfs4_listxattr kernel BUG at mm/usercopy.c:102
CVE-2024-26869 7.8 HIGH f2fs: fix to truncate meta inode pages forcely
CVE-2024-26865 7.8 HIGH rds: tcp: Fix use-after-free of net in reqsk_timer_handler().
CVE-2024-26864 7.8 HIGH tcp: Fix refcnt handling in __inet_hash_connect().
CVE-2024-26898 7.8 HIGH aoe: fix the potential use-after-free problem in aoecmd_cfg_pkts
CVE-2024-26852 7.8 HIGH net/ipv6: avoid possible UAF in ip6_route_mpath_notify()
CVE-2024-26895 7.8 HIGH wifi: wilc1000: prevent use-after-free on vif when cleaning up all interfaces
CVE-2024-26890 7.8 HIGH Bluetooth: btrtl: fix out of bounds memory access

Showing top 20 of 100 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-26901

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