CVE-2025-38544— rxrpc: Fix bug due to prealloc collision
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I. Basic Information for CVE-2025-38544
Vulnerability Information
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Vulnerability Title
rxrpc: Fix bug due to prealloc collision
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix bug due to prealloc collision When userspace is using AF_RXRPC to provide a server, it has to preallocate incoming calls and assign to them call IDs that will be used to thread related recvmsg() and sendmsg() together. The preallocated call IDs will automatically be attached to calls as they come in until the pool is empty. To the kernel, the call IDs are just arbitrary numbers, but userspace can use the call ID to hold a pointer to prepared structs. In any case, the user isn't permitted to create two calls with the same call ID (call IDs become available again when the call ends) and EBADSLT should result from sendmsg() if an attempt is made to preallocate a call with an in-use call ID. However, the cleanup in the error handling will trigger both assertions in rxrpc_cleanup_call() because the call isn't marked complete and isn't marked as having been released. Fix this by setting the call state in rxrpc_service_prealloc_one() and then marking it as being released before calling the cleanup function.
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，该漏洞源于预分配冲突，可能导致断言失败或错误状态。
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-2025-38544
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Same Patch Batch · Linux · 2025-08-16 · 59 CVEs total
| CVE-2025-38519 | mm/damon: fix divide by zero in damon_get_intervals_score() | |
| CVE-2025-38507 | HID: nintendo: avoid bluetooth suspend/resume stalls | |
| CVE-2025-38504 | io_uring/zcrx: fix pp destruction warnings | |
| CVE-2025-38505 | wifi: mwifiex: discard erroneous disassoc frames on STA interface | |
| CVE-2025-38506 | KVM: Allow CPU to reschedule while setting per-page memory attributes | |
| CVE-2025-38503 | btrfs: fix assertion when building free space tree | |
| CVE-2025-38515 | drm/sched: Increment job count before swapping tail spsc queue | |
| CVE-2025-38516 | pinctrl: qcom: msm: mark certain pins as invalid for interrupts | |
| CVE-2025-38517 | lib/alloc_tag: do not acquire non-existent lock in alloc_tag_top_users() | |
| CVE-2025-38518 | x86/CPU/AMD: Disable INVLPGB on Zen2 | |
| CVE-2025-38514 | rxrpc: Fix oops due to non-existence of prealloc backlog struct | |
| CVE-2025-38520 | drm/amdkfd: Don't call mmput from MMU notifier callback | |
| CVE-2025-38521 | drm/imagination: Fix kernel crash when hard resetting the GPU | |
| CVE-2025-38522 | sched/ext: Prevent update_locked_rq() calls with NULL rq | |
| CVE-2025-38523 | cifs: Fix the smbd_response slab to allow usercopy | |
| CVE-2025-38524 | rxrpc: Fix recv-recv race of completed call | |
| CVE-2025-38525 | rxrpc: Fix irq-disabled in local_bh_enable() | |
| CVE-2025-38526 | ice: add NULL check in eswitch lag check | |
| CVE-2025-38527 | smb: client: fix use-after-free in cifs_oplock_break | |
| CVE-2025-38528 | bpf: Reject %p% format string in bprintf-like helpers |
Showing top 20 of 59 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
Same vendor: Linux
- CVE-2026-43500
rxrpc: Also unshare DATA/RESPONSE packets when paged frags a - CVE-2026-43475
scsi: storvsc: Fix scheduling while atomic on PREEMPT_RT - CVE-2026-43474
fs: init flags_valid before calling vfs_fileattr_get - CVE-2026-43473
scsi: mpi3mr: Add NULL checks when resetting request and rep - CVE-2026-43472
unshare: fix unshare_fs() handling
V. Comments for CVE-2025-38544
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