CVE-2024-39301— net/9p: fix uninit-value in p9_client_rpc()
Affected Version Matrix 18
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 348b59012e5c6402741d067cf6eeeb6271999d06< 72c5d8e416ecc46af370a1340b3db5ff0b0cc867 | affected |
348b59012e5c6402741d067cf6eeeb6271999d06< 2101901dd58c6da4924bc5efb217a1d83436290b | affected | ||
348b59012e5c6402741d067cf6eeeb6271999d06< 124947855564572713d705a13be7d0c9dae16a17 | affected | ||
348b59012e5c6402741d067cf6eeeb6271999d06< 89969ffbeb948ffc159d19252e7469490103011b | affected | ||
348b59012e5c6402741d067cf6eeeb6271999d06< ca71f204711ad24113e8b344dc5bb8b0385f5672 | affected | ||
348b59012e5c6402741d067cf6eeeb6271999d06< 6c1791130b781c843572fb6391c4a4c5d857ab17 | affected | ||
348b59012e5c6402741d067cf6eeeb6271999d06< fe5c604053c36c62af24eee8a76407d026ea5163 | affected | ||
348b59012e5c6402741d067cf6eeeb6271999d06< 25460d6f39024cc3b8241b14c7ccf0d6f11a736a | affected | ||
| … +10 more rows | |||
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I. Basic Information for CVE-2024-39301
Vulnerability Information
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Vulnerability Title
net/9p: fix uninit-value in p9_client_rpc()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: net/9p: fix uninit-value in p9_client_rpc() Syzbot with the help of KMSAN reported the following error: BUG: KMSAN: uninit-value in trace_9p_client_res include/trace/events/9p.h:146 [inline] BUG: KMSAN: uninit-value in p9_client_rpc+0x1314/0x1340 net/9p/client.c:754 trace_9p_client_res include/trace/events/9p.h:146 [inline] p9_client_rpc+0x1314/0x1340 net/9p/client.c:754 p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031 v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410 v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122 legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1797 do_new_mount+0x71f/0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875 do_syscall_64+0xd5/0x1f0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 Uninit was created at: __alloc_pages+0x9d6/0xe70 mm/page_alloc.c:4598 __alloc_pages_node include/linux/gfp.h:238 [inline] alloc_pages_node include/linux/gfp.h:261 [inline] alloc_slab_page mm/slub.c:2175 [inline] allocate_slab mm/slub.c:2338 [inline] new_slab+0x2de/0x1400 mm/slub.c:2391 ___slab_alloc+0x1184/0x33d0 mm/slub.c:3525 __slab_alloc mm/slub.c:3610 [inline] __slab_alloc_node mm/slub.c:3663 [inline] slab_alloc_node mm/slub.c:3835 [inline] kmem_cache_alloc+0x6d3/0xbe0 mm/slub.c:3852 p9_tag_alloc net/9p/client.c:278 [inline] p9_client_prepare_req+0x20a/0x1770 net/9p/client.c:641 p9_client_rpc+0x27e/0x1340 net/9p/client.c:688 p9_client_create+0x1551/0x1ff0 net/9p/client.c:1031 v9fs_session_init+0x1b9/0x28e0 fs/9p/v9fs.c:410 v9fs_mount+0xe2/0x12b0 fs/9p/vfs_super.c:122 legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xa7/0x570 fs/super.c:1797 do_new_mount+0x71f/0x15e0 fs/namespace.c:3352 path_mount+0x742/0x1f20 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount+0x725/0x810 fs/namespace.c:3875 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3875 do_syscall_64+0xd5/0x1f0 entry_SYSCALL_64_after_hwframe+0x6d/0x75 If p9_check_errors() fails early in p9_client_rpc(), req->rc.tag will not be properly initialized. However, trace_9p_client_res() ends up trying to print it out anyway before p9_client_rpc() finishes. Fix this issue by assigning default values to p9_fcall fields such as 'tag' and (just in case KMSAN unearths something new) 'id' during the tag allocation stage.
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p9_check_errors() 在 p9_client_rpc() 中提前失败，req->rc.tag 将无法正确初始化。
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-2024-39301
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|---|
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Other References for CVE-2024-39301 (8)
Same Patch Batch · Linux · 2024-06-25 · 24 CVEs total
| CVE-2024-39371 | io_uring: check for non-NULL file pointer in io_file_can_poll() | |
| CVE-2024-39471 | drm/amdgpu: add error handle to avoid out-of-bounds | |
| CVE-2024-39469 | nilfs2: fix nilfs_empty_dir() misjudgment and long loop on I/O errors | |
| CVE-2024-39470 | eventfs: Fix a possible null pointer dereference in eventfs_find_events() | |
| CVE-2024-39468 | smb: client: fix deadlock in smb2_find_smb_tcon() | |
| CVE-2024-39467 | f2fs: fix to do sanity check on i_xattr_nid in sanity_check_inode() | |
| CVE-2024-39466 | thermal/drivers/qcom/lmh: Check for SCM availability at probe | |
| CVE-2024-39464 | media: v4l: async: Fix notifier list entry init | |
| CVE-2024-39465 | media: mgb4: Fix double debugfs remove | |
| CVE-2024-39463 | 9p: add missing locking around taking dentry fid list | |
| CVE-2024-39462 | clk: bcm: dvp: Assign ->num before accessing ->hws | |
| CVE-2024-39461 | clk: bcm: rpi: Assign ->num before accessing ->hws | |
| CVE-2021-4440 | x86/xen: Drop USERGS_SYSRET64 paravirt call | |
| CVE-2024-39298 | mm/memory-failure: fix handling of dissolved but not taken off from buddy pages | |
| CVE-2024-39296 | bonding: fix oops during rmmod | |
| CVE-2024-39293 | Revert "xsk: Support redirect to any socket bound to the same umem" | |
| CVE-2024-39276 | ext4: fix mb_cache_entry's e_refcnt leak in ext4_xattr_block_cache_find() | |
| CVE-2024-38661 | s390/ap: Fix crash in AP internal function modify_bitmap() | |
| CVE-2024-38385 | genirq/irqdesc: Prevent use-after-free in irq_find_at_or_after() | |
| CVE-2024-38306 | btrfs: protect folio::private when attaching extent buffer folios |
Showing top 20 of 24 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
Same vendor: Linux
- CVE-2026-46300
net: skbuff: preserve shared-frag marker during coalescing - CVE-2026-43503
net: skbuff: propagate shared-frag marker through frag-trans - CVE-2026-43502
net/rds: handle zerocopy send cleanup before the message is - CVE-2026-43501
ipv6: rpl: reserve mac_len headroom when recompressed SRH gr - CVE-2026-43498
accel/ivpu: Disallow re-exporting imported GEM objects
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