CVE-2023-52630

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2023-52630
Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.
CVSS

No CVSS.

References

No reference.

Configurations

No configuration.

History

30 Apr 2024, 09:15

Type Values Removed Values Added
References
  • {'url': 'https://git.kernel.org/stable/c/1e4d3f8bd880e02932a9ea179f90bfa74fd2e899', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}
  • {'url': 'https://git.kernel.org/stable/c/27b216130e64651e76ed583742a1b4e4d08a67c3', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}
  • {'url': 'https://git.kernel.org/stable/c/2a427b49d02995ea4a6ff93a1432c40fa4d36821', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}
  • {'url': 'https://git.kernel.org/stable/c/9f56f38331171c9a19754004f0664686d67ee48d', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}
  • {'url': 'https://git.kernel.org/stable/c/cd33b330cb21675189e747953845f5c3689e4912', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}
  • {'url': 'https://git.kernel.org/stable/c/e5dc63f01e027721c29f82069f7e97e2149fa131', 'source': '416baaa9-dc9f-4396-8d5f-8c081fb06d67'}
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: blk-iocost: corrige una advertencia de desplazamiento fuera de los límites de UBSAN Cuando se llama a iocg_kick_delay() desde una CPU diferente a la que estableció el retraso, @now puede estar en el pasado de @iocg->delay_at genera la siguiente advertencia: UBSAN: shift-out-of-bounds in block/blk-iocost.c:1359:23 el exponente de desplazamiento 18446744073709 es demasiado grande para el tipo 'u64' de 64 bits ( también conocido como 'unsigned long long') ... Seguimiento de llamadas: dump_stack_lvl+0x79/0xc0 __ubsan_handle_shift_out_of_bounds+0x2ab/0x300 iocg_kick_delay+0x222/0x230 ioc_rqos_merge+0x1d7/0x2c0 __rq_qos_merge+0x2c/0x80 bio _intento_back_merge+0x83/0x190 blk_attempt_plug_merge+0x101/ 0x150 blk_mq_submit_bio+0x2b1/0x720 submit_bio_noacct_nocheck+0x320/0x3e0 __swap_writepage+0x2ab/0x9d0 El subdesbordamiento en sí no afecta realmente el comportamiento de ninguna manera significativa; sin embargo, la marca de tiempo anterior puede exagerar la cantidad de retraso calculada más adelante en el código, lo que no debería ser un problema material dada la naturaleza del mecanismo de retraso. Si @now está en el pasado, esta CPU está compitiendo con otra CPU que recientemente configuró el retraso y no hay nada que esta CPU pueda contribuir con el retraso. Salgamos temprano de iocg_kick_delay() en tales casos.
Summary (en) In the Linux kernel, the following vulnerability has been resolved: blk-iocost: Fix an UBSAN shift-out-of-bounds warning When iocg_kick_delay() is called from a CPU different than the one which set the delay, @now may be in the past of @iocg->delay_at leading to the following warning: UBSAN: shift-out-of-bounds in block/blk-iocost.c:1359:23 shift exponent 18446744073709 is too large for 64-bit type 'u64' (aka 'unsigned long long') ... Call Trace: <TASK> dump_stack_lvl+0x79/0xc0 __ubsan_handle_shift_out_of_bounds+0x2ab/0x300 iocg_kick_delay+0x222/0x230 ioc_rqos_merge+0x1d7/0x2c0 __rq_qos_merge+0x2c/0x80 bio_attempt_back_merge+0x83/0x190 blk_attempt_plug_merge+0x101/0x150 blk_mq_submit_bio+0x2b1/0x720 submit_bio_noacct_nocheck+0x320/0x3e0 __swap_writepage+0x2ab/0x9d0 The underflow itself doesn't really affect the behavior in any meaningful way; however, the past timestamp may exaggerate the delay amount calculated later in the code, which shouldn't be a material problem given the nature of the delay mechanism. If @now is in the past, this CPU is racing another CPU which recently set up the delay and there's nothing this CPU can contribute w.r.t. the delay. Let's bail early from iocg_kick_delay() in such cases. (en) Rejected reason: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority.

02 Apr 2024, 07:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-04-02 07:15

Updated : 2024-04-30 09:15

NVD link : CVE-2023-52630

Mitre link : CVE-2023-52630

CVE.ORG link : CVE-2023-52630

JSON object : View

Products Affected

No product.

CWE

No CWE.