CVE-2021-47307

CVE-2021-47307 affects the Linux kernel CIFS implementation. The issue is a NULL dereference in cifs_compose_mount_options() when the optional ref parameter contains a NULL node_name. The vulnerability was fixed in the Linux kernel (details in the cited commits). CVSS data in the document set sho...

CVE-2021-47298

CVE-2021-47298 concerns the Linux kernel: a bpf/sockmap path could leak a message if skb_linearize fails, resolved by freeing the msg block before returning an error. Multiple connected advisories reference the same fix in the kernel; impact is a potential memory leak (no exploitation details pro...

CVE-2021-47296

CVE-2021-47296 corresponds to a Linux kernel KVM PPC issue: vcpu_load leak where vcpu_put is not called if a user copy fails, risking preempt notifier corruption and system crashes. Connected documents (Astra Linux bulletin and related security advisories) confirm a patch has been applied to fix ...

CVE-2021-47291

CVE-2021-47291 corresponds to a Linux kernel vulnerability where a slab-out-of-bounds occurs in ipv6 fib6_nh_flush_exceptions during KASAN-self-test scenarios. The issue is tied to the handling/initialization of fib6_metrics when an nh is provided, and the fix mirrors an earlier patch by explicit...

CVE-2021-47292

CVE-2021-47292 affects the Linux kernel io_uring subsystem. The issue is a memory leak in io_init_wq_offload() where a leaked hash_map can occur when io_uring_enter() is called in parallel (syz-executor traffic). Root cause: missing synchronization around kzalloc/hash_map updates in io_init_wq_of...

CVE-2021-47287

CVE-2021-47287 affects the Linux kernel. The issue is a memory leak in the auxiliary bus code when driver_register() fails. Specifically, if driver_register() returns an error, memory allocated for auxdrv->driver.name must be freed before returning from __auxiliary_driver_register(). The fix r...

CVE-2021-47281

CVE-2021-47281 affects the Linux kernel ALSA seq subsystem: snd_seq_timer_open() has a race on timeri allocation per queue, allowing a later concurrent call to override the timer and cause a use-after-free until the queue closes. The vulnerability is caused by missing protection when checking the...

CVE-2021-47277

CVE-2021-47277 affects the Linux kernel KVM path for guest memory translation. The issue arises when speculative execution may use an invalid guest frame number (gfn) to compute an out-of-bounds host virtual address (hva) in __gfn_to_hva_memslot, enabling a potential two-read Spectre gadget where...

CVE-2021-47274

In the Linux kernel, the following vulnerability has been resolved: tracing: Correct the length check which causes memory corruption We've suffered from severe kernel crashes due to memory corruption on our production environment, like, Call Trace: 1640542.554277 general protection fault: 0000 1...

CVE-2021-47263

CVE-2021-47263 is a Linux kernel issue in the gpio-wcd934x driver where a shift-out-of-bounds UBSAN error occurred due to using BIT(n-1) for pins 0–4, leading to an out-of-bounds shift in gpio-wcd934x.c:34:14. The vulnerability has been resolved by a patch to correct the bit-mask handling (pins 0...

CVE-2021-47257

The Linux kernel contains a vulnerability in the net: ieee802154 networking component, specifically within the ieee802154_llsec_parse_dev_addr() function in the nl802154.c module. A logic error can lead to a null pointer dereference if a user sets the mode incorrectly for the given address type. ...

CVE-2021-47256

CVE-2021-47256 stems from a Linux kernel memory_failure fix where a missing wait for page writeback could leave inode i_wb_list in an inconsistent state, triggering a BUG_ON in clear_inode and kernel panic. Connected advisories describe the root cause: after end_page_writeback, inode->i_wb_lis...

CVE-2021-47255

In CVE-2021-47255, the Linux kernel vulnerability affects KVM LAPIC: a read access path in kvm_lapic_reg_read could touch bytes 4–15 of an APIC register, risking leakage of kernel stack contents. The issue was resolved by restoring a guard removed in a prior commit and aligning with the SDM requi...

CVE-2021-47252

CVE-2021-47252 affects the Linux kernel batman-adv subsystem. The soft/batadv interface for a queued OGM could be modified between queuing and transmission, with WARN_ON used for kernel bugs rather than warnings. The vulnerability’s description and fixes are documented in connected advisories; th...

CVE-2021-47253

CVE-2021-47253 affects the Linux kernel’s DRM/AMD display path, where DMUB hw_init could leak memory on suspend/resume due to kzalloc allocation without guard. The fix ensures the DC wrapper memory is only allocated if it was not previously allocated, avoiding reallocation on suspend/resume. Docu...

CVE-2021-47250

CVE-2021-47250: memory leak in Linux kernel netlbl_cipsov4_add_std. The memory for doi_def->map.std allocated in netlbl_cipsov4_add_std is not freed anywhere; it should be freed in cipso_v4_doi_free, which frees the cipso DOI resource. This vulnerability detail is consistently described in con...

CVE-2021-47249

CVE-2021-47249 concerns a memory-leak in the Linux kernel’s net: rds path, fixed by correcting refcount handling in rds_recvmsg. The issue occurred when an error happened in rds_cmsg_recv(): after a successful rds_next_incoming(rs, &inc) the code would increment inc’s refcount, but on failure to ...

CVE-2021-47245

CVE-2021-47245 affects the Linux kernel netfilter synproxy TCP option parser. The vulnerability arises from an out-of-bounds read in synproxy_parse_options when parsing TCP options; if length equals 1, the loop reads an opcode byte and, if it is not TCPOPT_EOL or TCPOPT_NOP, reads one more byte, ...

CVE-2021-47243

The CVE-2021-47243 issue concerns the Linux kernel's cake_qdisc TCP option parser. Affected code paths cake_get_tcpopt and cake_tcph_may_drop could read one byte out of bounds when processing TCP options, particularly if the option length is 1, leading to a second read for opcodes not equal to TC...

CVE-2021-47241

The Linux kernel contains a vulnerability in the ethtool component where the outer nest for ETHTOOL_A_STRSET_STRINGSETS is not properly accounted for during message length calculation. This flaw in the net/ethtool/strset.c module's strset_reply_size() function can cause ETHTOOL_MSG_STRSET_GET to ...