CVE-2022-50422— scsi: libsas: Fix use-after-free bug in smp_execute_task_sg()
Affected Version Matrix 14
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 2908d778ab3e244900c310974e1fc1c69066e450< 117331a2a5227fb4369c2a1f321d3e3e2e2ef8fe | affected |
2908d778ab3e244900c310974e1fc1c69066e450< a9e5176ead6de64f572ad5c87a72825d9d3c82ae | affected | ||
2908d778ab3e244900c310974e1fc1c69066e450< e45a1516d2933703a4823d9db71e17c3abeba24f | affected | ||
2908d778ab3e244900c310974e1fc1c69066e450< f7a785177611ffc97d645fcbc196e6de6ad2421d | affected | ||
2908d778ab3e244900c310974e1fc1c69066e450< 2e12ce270f0d926085c1209cc90397e307deef97 | affected | ||
2908d778ab3e244900c310974e1fc1c69066e450< 46ba53c30666717cb06c2b3c5d896301cd00d0c0 | affected | ||
2.6.19 | affected | ||
< 2.6.19 | unaffected | ||
| … +6 more rows | |||
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I. Basic Information for CVE-2022-50422
Vulnerability Information
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Vulnerability Title
scsi: libsas: Fix use-after-free bug in smp_execute_task_sg()
Source: NVD (National Vulnerability Database)
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: scsi: libsas: Fix use-after-free bug in smp_execute_task_sg() When executing SMP task failed, the smp_execute_task_sg() calls del_timer() to delete "slow_task->timer". However, if the timer handler sas_task_internal_timedout() is running, the del_timer() in smp_execute_task_sg() will not stop it and a UAF will happen. The process is shown below: (thread 1) | (thread 2) smp_execute_task_sg() | sas_task_internal_timedout() ... | del_timer() | ... | ... sas_free_task(task) | kfree(task->slow_task) //FREE| | task->slow_task->... //USE Fix by calling del_timer_sync() in smp_execute_task_sg(), which makes sure the timer handler have finished before the "task->slow_task" is deallocated.
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smp_execute_task_sg函数中删除定时器时未使用同步机制，可能导致释放后重用。
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-2022-50422
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Linux · 2025-10-01 · 169 CVEs total
| CVE-2022-50462 | MIPS: vpe-mt: fix possible memory leak while module exiting | |
| CVE-2022-50452 | net: sched: cake: fix null pointer access issue when cake_init() fails | |
| CVE-2022-50451 | fs/ntfs3: Fix memory leak on ntfs_fill_super() error path | |
| CVE-2022-50453 | gpiolib: cdev: fix NULL-pointer dereferences | |
| CVE-2022-50454 | drm/nouveau: fix a use-after-free in nouveau_gem_prime_import_sg_table() | |
| CVE-2022-50457 | mtd: core: Fix refcount error in del_mtd_device() | |
| CVE-2022-50456 | btrfs: fix resolving backrefs for inline extent followed by prealloc | |
| CVE-2022-50458 | clk: tegra: Fix refcount leak in tegra210_clock_init | |
| CVE-2022-50460 | cifs: Fix xid leak in cifs_flock() | |
| CVE-2022-50459 | scsi: iscsi: iscsi_tcp: Fix null-ptr-deref while calling getpeername() | |
| CVE-2022-50461 | net: ethernet: ti: am65-cpsw: Fix PM runtime leakage in am65_cpsw_nuss_ndo_slave_open() | |
| CVE-2022-50467 | scsi: lpfc: Fix null ndlp ptr dereference in abnormal exit path for GFT_ID | |
| CVE-2023-53488 | IB/hfi1: Fix possible panic during hotplug remove | |
| CVE-2023-53489 | tcp/udp: Fix memleaks of sk and zerocopy skbs with TX timestamp. | |
| CVE-2022-50469 | staging: rtl8723bs: fix potential memory leak in rtw_init_drv_sw() | |
| CVE-2022-50468 | platform/chrome: cros_usbpd_notify: Fix error handling in cros_usbpd_notify_init() | |
| CVE-2022-50465 | ext4: fix leaking uninitialized memory in fast-commit journal | |
| CVE-2022-50463 | powerpc/52xx: Fix a resource leak in an error handling path | |
| CVE-2022-50464 | mt76: mt7915: Fix PCI device refcount leak in mt7915_pci_init_hif2() | |
| CVE-2022-50448 | mm/uffd: fix warning without PTE_MARKER_UFFD_WP compiled in |
Showing top 20 of 169 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
V. Comments for CVE-2022-50422
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